{"title":"Reef Supplements","description":"","products":[{"product_id":"fritz-rpm-liquid-pt-1-alkalinity-reef-supplement","title":"Fritz RPM Liquid PT 1 Alkalinity | 2-Part Alkalinity Supplement for Reef Aquariums","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #FF5722; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #FF5722; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #1a1a1a; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #f5c518; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #f4f4f4; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #FF5722; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #FF5722; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #1a1a1a; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #ddd; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #fafafa; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #fff8f8; }\n  .aq-check { color: #27ae60; font-weight: 700; }\n  .aq-dash { color: #bbb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #1a1a1a; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f9f9f9; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #FF5722; background: #fff; color: #FF5722; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #ffd7c2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-16:checked ~ .aq-tab-labels label[for=\"aq-tab-16\"],\n  #aq-tab-32:checked ~ .aq-tab-labels label[for=\"aq-tab-32\"],\n  #aq-tab-1g:checked ~ .aq-tab-labels label[for=\"aq-tab-1g\"],\n  #aq-tab-5g:checked ~ .aq-tab-labels label[for=\"aq-tab-5g\"] { background: #FF5722; color: #fff; }\n  #aq-tab-16:checked ~ .aq-panels #aq-panel-16,\n  #aq-tab-32:checked ~ .aq-panels #aq-panel-32,\n  #aq-tab-1g:checked ~ .aq-panels #aq-panel-1g,\n  #aq-tab-5g:checked ~ .aq-panels #aq-panel-5g { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eFritz RPM Liquid PT 1 Alkalinity\u003c\/strong\u003e is part one of the Fritz \u003cem\u003eReef Pro Mineral\u003c\/em\u003e two-part dosing system, formulated to replenish the alkalinity (KH) consumed by growing SPS, LPS, and soft corals. Made with pharmaceutical-grade ingredients in the USA, RPM PT 1 keeps your reef chemistry stable between water changes so corals can color up and skeletons can keep building.\u003c\/p\u003e\n\n  \u003cp\u003ePair PT 1 with Fritz RPM PT 2 (Calcium) for full two-part dosing, and verify your levels with a precision \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/salifert-kh-alkalinity-test-kit\"\u003eSalifert KH\/Alkalinity Test Kit\u003c\/a\u003e or the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hanna-hi772-dkh-alkalinity-colorimeter\"\u003eHanna dKH Alkalinity Checker\u003c\/a\u003e. Browse the full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives \u0026amp; supplements collection\u003c\/a\u003e for the rest of your reef chemistry lineup.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003ePharmaceutical-grade. Made in the USA.\u003c\/strong\u003e Every Fritz RPM bottle is blended from high-purity raw materials and quality-tested. No fillers, no surprises — just clean, predictable alkalinity dosing.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHow It Works\u003c\/h2\u003e\n  \u003cp\u003eCorals consume alkalinity (carbonate hardness) as they build their calcium-carbonate skeletons. As KH drops, coral growth slows, polyp extension diminishes, and stressed tissue can recede. RPM PT 1 delivers a balanced liquid alkalinity supplement that you dose daily — alongside RPM PT 2 (calcium) — to keep dKH steady inside the reef-safe range of 8.0–9.5 dKH.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures — All Sizes\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePharmaceutical-Grade\u003c\/strong\u003e\u003cspan\u003eHigh-purity raw materials, no industrial fillers.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTwo-Part Balanced\u003c\/strong\u003e\u003cspan\u003eDesigned to dose alongside RPM PT 2 (Calcium) in equal volumes.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReef-Safe Formula\u003c\/strong\u003e\u003cspan\u003eSafe for SPS, LPS, soft corals, anemones, and reef inverts.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eLiquid — No Mixing\u003c\/strong\u003e\u003cspan\u003ePour straight from the bottle — no stirring powders into RO\/DI.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e\u003cspan\u003eManufactured by Fritz Aquatics in Mesquite, Texas.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePredictable Dosing\u003c\/strong\u003e\u003cspan\u003e~1 mL per gallon raises alkalinity by ~0.7 dKH (typical).\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eWorks With Dosers\u003c\/strong\u003e\u003cspan\u003eLiquid form is ideal for automatic dosing pumps and gravity reservoirs.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eStable Shelf Life\u003c\/strong\u003e\u003cspan\u003eSealed bottles store well in a cool, dark cabinet.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size — Variant Comparison\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for the full individual spec sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e16 oz\u003c\/th\u003e\n          \u003cth\u003e32 oz\u003c\/th\u003e\n          \u003cth\u003e1 Gallon\u003c\/th\u003e\n          \u003cth\u003e5 Gallon\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e473 mL\u003c\/td\u003e\n\u003ctd\u003e946 mL\u003c\/td\u003e\n\u003ctd\u003e3.78 L\u003c\/td\u003e\n\u003ctd\u003e18.9 L\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80300\u003c\/td\u003e\n\u003ctd\u003e80301\u003c\/td\u003e\n\u003ctd\u003e80303\u003c\/td\u003e\n\u003ctd\u003e80304\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eRound bottle\u003c\/td\u003e\n\u003ctd\u003eRound bottle\u003c\/td\u003e\n\u003ctd\u003eJug w\/ handle\u003c\/td\u003e\n\u003ctd\u003eBucket w\/ handle\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eIdeal For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs 20–60 gal\u003c\/td\u003e\n\u003ctd\u003eMid reefs 60–180 gal\u003c\/td\u003e\n\u003ctd\u003eLarge \/ multi-tank systems\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eWorks With Dosers\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Variant Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full specification sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-16\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-32\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1g\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5g\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-16\" class=\"aq-tab-label\"\u003e16 oz — Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-32\" class=\"aq-tab-label\"\u003e32 oz — Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1g\" class=\"aq-tab-label\"\u003e1 Gallon — Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5g\" class=\"aq-tab-label\"\u003e5 Gallon — Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-16\"\u003e\n      \u003ch3\u003e16 oz · Nano-Reef Bottle · SKU 80300\u003c\/h3\u003e\n      \u003cp\u003eThe 16 oz bottle is sized for nano and pico reef hobbyists running tanks up to about 20 gallons, or for anyone who wants to trial RPM dosing before committing to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80300\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e16 fl oz (473 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eNano \u0026amp; pico reefs (≤ 20 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003ePour cap, manual or doser\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-32\"\u003e\n      \u003ch3\u003e32 oz · Small-Reef Bottle · SKU 80301\u003c\/h3\u003e\n      \u003cp\u003eThe 32 oz bottle is the everyday size for small reefs in the 20–60 gallon range. About double the dosing runway of the 16 oz with the same convenient bottle format.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80301\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e32 fl oz (946 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSmall reefs (20–60 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003ePour cap, manual or doser\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1g\"\u003e\n      \u003ch3\u003e1 Gallon · Mid-Reef Jug · SKU 80303\u003c\/h3\u003e\n      \u003cp\u003eThe 1 Gallon jug is the sweet spot for the typical mid-sized reef tank (60–180 gallons). Best value per ounce for hobbyists running daily two-part doses with a peristaltic doser.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80303\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1 US Gallon (3.78 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eMid reefs (60–180 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003eCarry handle, gravity-feed or doser pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5g\"\u003e\n      \u003ch3\u003e5 Gallon · Large-System Bucket · SKU 80304\u003c\/h3\u003e\n      \u003cp\u003eThe 5 Gallon bucket is built for large reefs, frag systems, and multi-tank fishrooms. Months of dosing runway in one container; pulls comfortably with a stiff dosing tube and weighted strainer.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80304\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5 US Gallons (18.9 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eLarge reefs, frag tanks, multi-tank rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003eSealed bucket w\/ handle, dosing tube pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e16 oz\u003c\/strong\u003e — Pick this for pico\/nano reefs (≤ 20 gal), or to trial RPM dosing before stepping up.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e32 oz\u003c\/strong\u003e — The everyday size for small reefs in the 20–60 gallon range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 Gallon\u003c\/strong\u003e — Best value for the typical mid-reef hobbyist running daily two-part doses on a 60–180 gallon system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 Gallon\u003c\/strong\u003e — The choice for large reefs, frag systems, and anyone running multiple tanks who wants months of runway.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Dose\u003c\/h2\u003e\n  \u003cp\u003eBegin by testing your current alkalinity to establish a baseline. As a starting point, dose \u003cstrong\u003e1 mL of RPM PT 1 per gallon of tank water\u003c\/strong\u003e to raise alkalinity approximately \u003cstrong\u003e0.7 dKH\u003c\/strong\u003e — then adjust based on your daily consumption rate after running a 48-hour test sequence. Always dose PT 1 and PT 2 separately (different times of day, or different points in the sump) to avoid precipitation. Never combine them in the same dosing reservoir.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need to dose PT 2 (Calcium) at the same time?\u003c\/strong\u003e\u003cbr\u003eYes — RPM is a two-part system. Alkalinity and calcium are consumed together by coral skeletal growth, so dose roughly equal volumes of PT 1 and PT 2 daily, spaced apart by at least an hour to prevent precipitation.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat dKH should I target?\u003c\/strong\u003e\u003cbr\u003eMost reef hobbyists target \u003cstrong\u003e8.0–9.5 dKH\u003c\/strong\u003e. SPS-dominant tanks often dial in tighter (8.5–8.8) and prefer rock-stable readings over high numbers.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I use this in a fish-only saltwater tank?\u003c\/strong\u003e\u003cbr\u003eYou can, but there's no need — fish-only systems don't consume alkalinity quickly. Weekly water changes with a quality reef salt cover everything a FOWLR tank needs.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWill PT 1 affect pH?\u003c\/strong\u003e\u003cbr\u003eYes — alkalinity supplements can nudge pH upward briefly after dosing. This is normal; the effect dampens as the buffer integrates into the system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eIs it safe for refugiums, sumps, and inverts?\u003c\/strong\u003e\u003cbr\u003eYes. RPM PT 1 is reef-safe when dosed at the recommended rate and is compatible with shrimp, snails, starfish, anemones, and macroalgae refugiums.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Fritz","offers":[{"title":"16 oz","offer_id":48741978341595,"sku":"80300","price":9.59,"currency_code":"USD","in_stock":true},{"title":"32 oz","offer_id":48741978374363,"sku":"80301","price":11.99,"currency_code":"USD","in_stock":true},{"title":"1 Gallon","offer_id":48741978407131,"sku":"80303","price":23.99,"currency_code":"USD","in_stock":false},{"title":"5 Gallon","offer_id":48742011896027,"sku":"80304","price":65.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_aa24ebaa-2ae0-4181-99ea-034b9515d6cf.png?v=1777898343"},{"product_id":"fritz-rpm-liquid-pt-2-calcium-reef-supplement","title":"Fritz RPM Liquid PT 2 Calcium | 2-Part Calcium Supplement for Reef Aquariums","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #FF5722; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #FF5722; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #1a1a1a; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #f5c518; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #f4f4f4; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #FF5722; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #FF5722; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #1a1a1a; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #ddd; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #fafafa; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #fff8f8; }\n  .aq-check { color: #27ae60; font-weight: 700; }\n  .aq-dash { color: #bbb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #1a1a1a; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f9f9f9; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #FF5722; background: #fff; color: #FF5722; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #ffd7c2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-16:checked ~ .aq-tab-labels label[for=\"aq-tab-16\"],\n  #aq-tab-32:checked ~ .aq-tab-labels label[for=\"aq-tab-32\"],\n  #aq-tab-1g:checked ~ .aq-tab-labels label[for=\"aq-tab-1g\"],\n  #aq-tab-5g:checked ~ .aq-tab-labels label[for=\"aq-tab-5g\"] { background: #FF5722; color: #fff; }\n  #aq-tab-16:checked ~ .aq-panels #aq-panel-16,\n  #aq-tab-32:checked ~ .aq-panels #aq-panel-32,\n  #aq-tab-1g:checked ~ .aq-panels #aq-panel-1g,\n  #aq-tab-5g:checked ~ .aq-panels #aq-panel-5g { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eFritz RPM Liquid PT 2 Calcium\u003c\/strong\u003e is part two of the Fritz \u003cem\u003eReef Pro Mineral\u003c\/em\u003e two-part dosing system, formulated to replenish the calcium (Ca) consumed by SPS, LPS, and soft corals as they build their carbonate skeletons. Pharmaceutical-grade and made in the USA, RPM PT 2 keeps your reef chemistry rock-solid between water changes.\u003c\/p\u003e\n\n  \u003cp\u003ePair PT 2 with \u003cstrong\u003eFritz RPM PT 1 (Alkalinity)\u003c\/strong\u003e for full two-part dosing, and verify levels with a precision \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/salifert-calcium-test-kit\"\u003eSalifert Calcium Test Kit\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hanna-hi758-marine-calcium-colorimeter\"\u003eHanna Marine Calcium Checker HC\u003c\/a\u003e. Browse the full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives \u0026amp; supplements collection\u003c\/a\u003e for the rest of your reef chemistry lineup.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003ePharmaceutical-grade. Made in the USA.\u003c\/strong\u003e Every Fritz RPM bottle is blended from high-purity raw materials and quality-tested. No fillers, no surprises — just clean, predictable calcium dosing.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHow It Works\u003c\/h2\u003e\n  \u003cp\u003eCorals consume calcium and alkalinity in roughly equal proportion as they grow their calcium-carbonate skeletons. As Ca drops, coral growth stalls and skeletons can stop forming. RPM PT 2 delivers a balanced liquid calcium supplement that you dose daily — alongside RPM PT 1 (alkalinity) — to keep calcium steady in the reef-safe range of \u003cstrong\u003e400–450 ppm\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures — All Sizes\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePharmaceutical-Grade\u003c\/strong\u003e\u003cspan\u003eHigh-purity raw materials, no industrial fillers.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTwo-Part Balanced\u003c\/strong\u003e\u003cspan\u003eDesigned to dose alongside RPM PT 1 (Alkalinity) in equal volumes.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReef-Safe Formula\u003c\/strong\u003e\u003cspan\u003eSafe for SPS, LPS, soft corals, anemones, and reef inverts.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eLiquid — No Mixing\u003c\/strong\u003e\u003cspan\u003ePour straight from the bottle — no powders to dissolve.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e\u003cspan\u003eManufactured by Fritz Aquatics in Mesquite, Texas.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePredictable Dosing\u003c\/strong\u003e\u003cspan\u003eDose in equal volume to PT 1 for balanced reef chemistry.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eWorks With Dosers\u003c\/strong\u003e\u003cspan\u003eLiquid format is ideal for automatic dosing pumps.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eStable Shelf Life\u003c\/strong\u003e\u003cspan\u003eSealed bottles store well in a cool, dark cabinet.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size — Variant Comparison\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for the full individual spec sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e16 oz\u003c\/th\u003e\n          \u003cth\u003e32 oz\u003c\/th\u003e\n          \u003cth\u003e1 Gallon\u003c\/th\u003e\n          \u003cth\u003e5 Gallon\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e473 mL\u003c\/td\u003e\n\u003ctd\u003e946 mL\u003c\/td\u003e\n\u003ctd\u003e3.78 L\u003c\/td\u003e\n\u003ctd\u003e18.9 L\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80305\u003c\/td\u003e\n\u003ctd\u003e80306\u003c\/td\u003e\n\u003ctd\u003e80308\u003c\/td\u003e\n\u003ctd\u003e80309\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eRound bottle\u003c\/td\u003e\n\u003ctd\u003eRound bottle\u003c\/td\u003e\n\u003ctd\u003eJug w\/ handle\u003c\/td\u003e\n\u003ctd\u003eBucket w\/ handle\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eIdeal For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs 20–60 gal\u003c\/td\u003e\n\u003ctd\u003eMid reefs 60–180 gal\u003c\/td\u003e\n\u003ctd\u003eLarge \/ multi-tank systems\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eWorks With Dosers\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Variant Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full specification sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-16\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-32\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1g\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5g\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-16\" class=\"aq-tab-label\"\u003e16 oz — Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-32\" class=\"aq-tab-label\"\u003e32 oz — Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1g\" class=\"aq-tab-label\"\u003e1 Gallon — Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5g\" class=\"aq-tab-label\"\u003e5 Gallon — Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-16\"\u003e\n      \u003ch3\u003e16 oz · Nano-Reef Bottle · SKU 80305\u003c\/h3\u003e\n      \u003cp\u003eThe 16 oz bottle is sized for nano and pico reef hobbyists running tanks up to about 20 gallons, or for anyone trialling RPM dosing before committing to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80305\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e16 fl oz (473 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eNano \u0026amp; pico reefs (≤ 20 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003ePour cap, manual or doser\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-32\"\u003e\n      \u003ch3\u003e32 oz · Small-Reef Bottle · SKU 80306\u003c\/h3\u003e\n      \u003cp\u003eThe 32 oz bottle is the everyday size for small reefs in the 20–60 gallon range. About double the dosing runway of the 16 oz with the same convenient bottle format.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80306\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e32 fl oz (946 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSmall reefs (20–60 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003ePour cap, manual or doser\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1g\"\u003e\n      \u003ch3\u003e1 Gallon · Mid-Reef Jug · SKU 80308\u003c\/h3\u003e\n      \u003cp\u003eThe 1 Gallon jug is the sweet spot for the typical mid-sized reef tank (60–180 gallons). Best value per ounce for hobbyists running daily two-part doses with a peristaltic doser.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80308\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1 US Gallon (3.78 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eMid reefs (60–180 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003eCarry handle, gravity-feed or doser pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5g\"\u003e\n      \u003ch3\u003e5 Gallon · Large-System Bucket · SKU 80309\u003c\/h3\u003e\n      \u003cp\u003eThe 5 Gallon bucket is built for large reefs, frag systems, and multi-tank fishrooms. Months of dosing runway in one container; pulls comfortably with a stiff dosing tube and weighted strainer.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80309\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5 US Gallons (18.9 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eLarge reefs, frag tanks, multi-tank rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003eSealed bucket w\/ handle, dosing tube pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e16 oz\u003c\/strong\u003e — Pick this for pico\/nano reefs (≤ 20 gal), or to trial RPM dosing before stepping up.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e32 oz\u003c\/strong\u003e — The everyday size for small reefs in the 20–60 gallon range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 Gallon\u003c\/strong\u003e — Best value for the typical mid-reef hobbyist running daily two-part doses on a 60–180 gallon system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 Gallon\u003c\/strong\u003e — The choice for large reefs, frag systems, and anyone running multiple tanks who wants months of runway.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Dose\u003c\/h2\u003e\n  \u003cp\u003eTest your current calcium to establish a baseline. As a starting point, dose \u003cstrong\u003e1 mL of RPM PT 2 per gallon of tank water\u003c\/strong\u003e to raise calcium approximately \u003cstrong\u003e2.5 ppm\u003c\/strong\u003e — then adjust based on your daily consumption rate after running a 48-hour test sequence. Always dose PT 1 and PT 2 separately (different times of day, or different points in the sump) to avoid precipitation. Never combine them in the same dosing reservoir.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need to dose PT 1 (Alkalinity) at the same time?\u003c\/strong\u003e\u003cbr\u003eYes — RPM is a two-part system. Calcium and alkalinity are consumed together by coral skeletal growth, so dose roughly equal volumes of PT 1 and PT 2 daily, spaced apart by at least an hour to prevent precipitation.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat calcium level should I target?\u003c\/strong\u003e\u003cbr\u003eMost reef hobbyists target \u003cstrong\u003e400–450 ppm calcium\u003c\/strong\u003e. SPS-dominant tanks often run on the higher end and prioritize stability over absolute number.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWill PT 2 affect pH or alkalinity?\u003c\/strong\u003e\u003cbr\u003ePT 2 is calcium chloride based and is pH-neutral. It does not directly affect alkalinity, which is why PT 1 must be dosed alongside.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I use this in a fish-only saltwater tank?\u003c\/strong\u003e\u003cbr\u003eYou can, but there's no need — fish-only systems don't consume calcium quickly. Weekly water changes with a quality reef salt cover everything a FOWLR tank needs.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eIs it safe for refugiums, sumps, and inverts?\u003c\/strong\u003e\u003cbr\u003eYes. RPM PT 2 is reef-safe when dosed at the recommended rate and is compatible with shrimp, snails, starfish, anemones, and macroalgae refugiums.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Fritz","offers":[{"title":"16 oz","offer_id":48742013370587,"sku":"80305","price":9.59,"currency_code":"USD","in_stock":true},{"title":"32 oz","offer_id":48742013403355,"sku":"80306","price":11.99,"currency_code":"USD","in_stock":true},{"title":"1 Gallon","offer_id":48742013436123,"sku":"80308","price":23.99,"currency_code":"USD","in_stock":false},{"title":"5 Gallon","offer_id":48742013468891,"sku":"80309","price":65.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_dda11b99-9c77-4645-9668-ae1c2e546bfb.png?v=1777898637"},{"product_id":"fritz-rpm-liquid-pt-3-magnesium-reef-supplement","title":"Fritz RPM Liquid PT 3 Magnesium | Reef Magnesium Supplement for SPS, LPS \u0026 Soft Corals","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #FF5722; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #FF5722; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #1a1a1a; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #f5c518; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #f4f4f4; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #FF5722; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #FF5722; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #1a1a1a; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #ddd; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #fafafa; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #fff8f8; }\n  .aq-check { color: #27ae60; font-weight: 700; }\n  .aq-dash { color: #bbb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #1a1a1a; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f9f9f9; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #FF5722; background: #fff; color: #FF5722; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #ffd7c2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-16:checked ~ .aq-tab-labels label[for=\"aq-tab-16\"],\n  #aq-tab-32:checked ~ .aq-tab-labels label[for=\"aq-tab-32\"],\n  #aq-tab-1g:checked ~ .aq-tab-labels label[for=\"aq-tab-1g\"],\n  #aq-tab-5g:checked ~ .aq-tab-labels label[for=\"aq-tab-5g\"] { background: #FF5722; color: #fff; }\n  #aq-tab-16:checked ~ .aq-panels #aq-panel-16,\n  #aq-tab-32:checked ~ .aq-panels #aq-panel-32,\n  #aq-tab-1g:checked ~ .aq-panels #aq-panel-1g,\n  #aq-tab-5g:checked ~ .aq-panels #aq-panel-5g { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eFritz RPM Liquid PT 3 Magnesium\u003c\/strong\u003e is the magnesium component of the Fritz \u003cem\u003eReef Pro Mineral\u003c\/em\u003e dosing system. Stable magnesium (Mg) levels keep calcium and alkalinity from precipitating out of solution, which is why Mg is the unsung hero of every successful reef tank. Pharmaceutical-grade and made in the USA, PT 3 delivers a clean, predictable boost any time Mg trends below the reef-safe range.\u003c\/p\u003e\n\n  \u003cp\u003eDose alongside \u003cstrong\u003eRPM PT 1 (Alkalinity)\u003c\/strong\u003e and \u003cstrong\u003ePT 2 (Calcium)\u003c\/strong\u003e for full reef chemistry support, and verify levels with a precision test kit like the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/salifert-magnesium-test-kit\"\u003eSalifert Magnesium Test Kit\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hanna-hi783-marine-magnesium-checker-hc\"\u003eHanna Marine Magnesium Checker HC\u003c\/a\u003e. Browse the full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives \u0026amp; supplements collection\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003ePharmaceutical-grade. Made in the USA.\u003c\/strong\u003e Stable magnesium protects every dollar you spend on calcium and alkalinity dosing — without it, Ca and Alk will not hold.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhy Magnesium Matters\u003c\/h2\u003e\n  \u003cp\u003eMagnesium acts as the buffer that keeps calcium and carbonate ions in solution. When Mg drops below ~1250 ppm, calcium and alkalinity become unstable and start to precipitate out as scale — turning your tank glass cloudy and starving corals of the minerals they need to grow. Most reef hobbyists target \u003cstrong\u003e1280–1380 ppm\u003c\/strong\u003e magnesium; salt mixes alone often fall short, especially in tanks with heavy SPS growth.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures — All Sizes\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePharmaceutical-Grade\u003c\/strong\u003e\u003cspan\u003eHigh-purity raw materials, no fillers.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReef-Safe Magnesium\u003c\/strong\u003e\u003cspan\u003eSafe for SPS, LPS, soft corals, anemones, and reef inverts.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eStabilizes Ca \u0026amp; Alk\u003c\/strong\u003e\u003cspan\u003eKeeps calcium and alkalinity from precipitating.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eLiquid — No Mixing\u003c\/strong\u003e\u003cspan\u003ePour straight from the bottle — no powders to dissolve.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e\u003cspan\u003eManufactured by Fritz Aquatics in Mesquite, Texas.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePredictable Dosing\u003c\/strong\u003e\u003cspan\u003eDose to raise Mg slowly — no more than 100 ppm per day.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eWorks With Dosers\u003c\/strong\u003e\u003cspan\u003eLiquid format is ideal for automatic dosing pumps.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eRPM System Compatible\u003c\/strong\u003e\u003cspan\u003ePairs with Fritz RPM PT 1 (Alk) and PT 2 (Ca).\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size — Variant Comparison\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for the full individual spec sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e16 oz\u003c\/th\u003e\n          \u003cth\u003e32 oz\u003c\/th\u003e\n          \u003cth\u003e1 Gallon\u003c\/th\u003e\n          \u003cth\u003e5 Gallon\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e473 mL\u003c\/td\u003e\n\u003ctd\u003e946 mL\u003c\/td\u003e\n\u003ctd\u003e3.78 L\u003c\/td\u003e\n\u003ctd\u003e18.9 L\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80310\u003c\/td\u003e\n\u003ctd\u003e80311\u003c\/td\u003e\n\u003ctd\u003e80313\u003c\/td\u003e\n\u003ctd\u003e80314\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eRound bottle\u003c\/td\u003e\n\u003ctd\u003eRound bottle\u003c\/td\u003e\n\u003ctd\u003eJug w\/ handle\u003c\/td\u003e\n\u003ctd\u003eBucket w\/ handle\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eIdeal For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs 20–60 gal\u003c\/td\u003e\n\u003ctd\u003eMid reefs 60–180 gal\u003c\/td\u003e\n\u003ctd\u003eLarge \/ multi-tank systems\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eWorks With Dosers\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"aq-check\"\u003e✓\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Variant Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full specification sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-16\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-32\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1g\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5g\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-16\" class=\"aq-tab-label\"\u003e16 oz — Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-32\" class=\"aq-tab-label\"\u003e32 oz — Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1g\" class=\"aq-tab-label\"\u003e1 Gallon — Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5g\" class=\"aq-tab-label\"\u003e5 Gallon — Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-16\"\u003e\n      \u003ch3\u003e16 oz · Nano-Reef Bottle · SKU 80310\u003c\/h3\u003e\n      \u003cp\u003eThe 16 oz bottle is sized for nano and pico reef hobbyists running tanks up to about 20 gallons, or for anyone correcting a one-time low-Mg reading without committing to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80310\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e16 fl oz (473 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eNano \u0026amp; pico reefs (≤ 20 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003ePour cap, manual or doser\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-32\"\u003e\n      \u003ch3\u003e32 oz · Small-Reef Bottle · SKU 80311\u003c\/h3\u003e\n      \u003cp\u003eThe 32 oz bottle is the everyday size for small reefs in the 20–60 gallon range. Magnesium consumption tracks coral growth — this size lasts most casual hobbyists a few months.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80311\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e32 fl oz (946 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSmall reefs (20–60 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003ePour cap, manual or doser\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1g\"\u003e\n      \u003ch3\u003e1 Gallon · Mid-Reef Jug · SKU 80313\u003c\/h3\u003e\n      \u003cp\u003eThe 1 Gallon jug is the sweet spot for the typical mid-sized reef tank (60–180 gallons). Best value per ounce for hobbyists running a dedicated Mg dosing channel.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80313\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1 US Gallon (3.78 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eMid reefs (60–180 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003eCarry handle, gravity-feed or doser pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5g\"\u003e\n      \u003ch3\u003e5 Gallon · Large-System Bucket · SKU 80314\u003c\/h3\u003e\n      \u003cp\u003eThe 5 Gallon bucket is built for large reefs and frag systems. Long runway between refills for hobbyists with high Mg consumption from heavy SPS growth.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e80314\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5 US Gallons (18.9 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eLarge reefs, frag tanks, multi-tank rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDispensing\u003c\/td\u003e\n\u003ctd\u003eSealed bucket w\/ handle, dosing tube pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e16 oz\u003c\/strong\u003e — Best for pico\/nano reefs (≤ 20 gal) or correcting a single low reading.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e32 oz\u003c\/strong\u003e — The everyday size for small reefs in the 20–60 gallon range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 Gallon\u003c\/strong\u003e — Best value for mid-reef hobbyists running ongoing Mg supplementation.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 Gallon\u003c\/strong\u003e — The choice for large reefs and SPS-dominant systems with high Mg consumption.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Dose\u003c\/h2\u003e\n  \u003cp\u003eTest your magnesium first. If your Mg is below 1280 ppm, dose \u003cstrong\u003eno more than 100 ppm of correction per day\u003c\/strong\u003e to avoid stressing livestock. Spread the dose throughout the day, ideally in a high-flow area of the sump or display. Retest 24 hours after dosing before applying another correction. For ongoing maintenance, dose daily based on your tank's measured Mg consumption rate.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat Mg level should I target?\u003c\/strong\u003e\u003cbr\u003eMost reef tanks do well at \u003cstrong\u003e1280–1380 ppm\u003c\/strong\u003e. SPS-dominant tanks often run slightly higher (1350–1400) for stability margin.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhy does my Mg keep dropping?\u003c\/strong\u003e\u003cbr\u003eHeavy coral growth, calcium reactor use, frequent dosing of Ca and Alk, and even some salt mixes can pull Mg down over time. Test weekly and dose to maintain.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I dose PT 3 at the same time as PT 1 and PT 2?\u003c\/strong\u003e\u003cbr\u003eYes — unlike Ca and Alk, magnesium can be dosed alongside either without precipitation issues. Many hobbyists dose Mg first, then Alk, then Ca on separate dosing pumps.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eIs it safe for refugiums, inverts, and macroalgae?\u003c\/strong\u003e\u003cbr\u003eYes. Mg supplementation at the recommended rate is reef-safe and supports invertebrate shell\/skeleton health.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I still need this if I do regular water changes?\u003c\/strong\u003e\u003cbr\u003eFor lightly stocked tanks with frequent large water changes, water changes alone can keep Mg in range. Most tanks with significant coral growth need supplementation between changes.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Fritz","offers":[{"title":"16 oz","offer_id":48742070485211,"sku":"80310","price":10.39,"currency_code":"USD","in_stock":true},{"title":"32 oz","offer_id":48742070517979,"sku":"80311","price":14.39,"currency_code":"USD","in_stock":true},{"title":"1 Gallon","offer_id":48742070550747,"sku":"80313","price":31.19,"currency_code":"USD","in_stock":true},{"title":"5 Gallon","offer_id":48742070583515,"sku":"80314","price":79.19,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_18980d62-eea2-470c-8b7a-73b97ed549d5.png?v=1777898832"},{"product_id":"brightwell-magnesion-magnesium","title":"Brightwell Aquatics Magnesion","description":"\u003cp\u003e\u003cstrong\u003eBrightwell Magnesion\u003c\/strong\u003e is a concentrated liquid magnesium supplement for reef aquariums. Magnesium is the quiet workhorse of reef chemistry: it keeps calcium and alkalinity in solution so they stay available to your corals instead of precipitating out. Hold it in range alongside \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-a-calcium\"\u003eReef Code A\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-b-alkalinity\"\u003eReef Code B\u003c\/a\u003e, and browse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/brightwell-aquatics\"\u003eBrightwell Aquatics\u003c\/a\u003e reef care.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eWhy Magnesium Matters\u003c\/h3\u003e\n\u003cp\u003eNatural seawater holds magnesium at about 1,290 to 1,320 ppm, roughly three times the level of calcium. At that concentration it stops calcium and carbonate from bonding and falling out of solution. If magnesium drifts low, dosing calcium and alkalinity becomes inefficient, your numbers get hard to hold, and precipitation can cloud the water or coat your equipment. Keeping magnesium in range is what makes the rest of your dosing work.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConcentrated liquid magnesium for marine and reef aquariums\u003c\/li\u003e\n\u003cli\u003eKeeps calcium and alkalinity stable and available to corals\u003c\/li\u003e\n\u003cli\u003eEach ml raises magnesium in 1 gallon by about 26 ppm\u003c\/li\u003e\n\u003cli\u003eReef safe, with no phosphate or nitrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eDirections for Use\u003c\/h3\u003e\n\u003cp\u003eShake well before use and test your magnesium before dosing. For maintenance, add 5 ml (1 capful) per 20 gallons every other day, or as needed, to hold magnesium between 1,290 and 1,320 ppm. Each ml raises magnesium in 1 gallon by about 26 ppm. If magnesium is below 1,288 ppm, you can dose up to 10 ml per 20 gallons daily until it reaches your target, then return to maintenance dosing. Used for maintenance, 250 ml treats up to 1,000 gallons.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#E0F7FA;\"\u003e\n\u003cth style=\"border:1px solid #B2EBF2;padding:5px 8px;text-align:left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border:1px solid #B2EBF2;padding:5px 8px;text-align:left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eNano and smaller reef tanks, or occasional magnesium top-ups.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eMid-size reef tanks on a regular dosing schedule.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e2 L\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eLarger or coral-heavy systems, with the best value per ml.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eBrightwell Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eMagnesion, liquid magnesium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eRaises\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eAbout 26 ppm magnesium per ml, per gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eTarget range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e1,290 to 1,320 ppm magnesium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eUse with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eReef Code A and Reef Code B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e250 ml, 500 ml, 2 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eReef safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eCountry of origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-a-calcium\"\u003eReef Code A\u003c\/a\u003e supplies calcium in the balanced two-part system.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-b-alkalinity\"\u003eReef Code B\u003c\/a\u003e supplies alkalinity in the balanced two-part system.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/brightwell-aquatics\"\u003eBrightwell Aquatics\u003c\/a\u003e is the full brand lineup.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eAdditives and supplements\u003c\/a\u003e for more reef dosing options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need to dose magnesium?\u003c\/strong\u003e Magnesium keeps calcium and carbonate in solution. Without enough of it, dosing calcium and alkalinity becomes a losing battle because they precipitate out instead of feeding your corals. Correct magnesium makes your calcium and alkalinity dosing stable and efficient.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I test magnesium?\u003c\/strong\u003e Magnesium moves more slowly than calcium and alkalinity, so testing every week or two is usually enough for an established tank. Test before dosing and adjust to keep it in the 1,290 to 1,320 ppm range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs Magnesion reef safe?\u003c\/strong\u003e Yes. It is formulated for reef aquariums and is safe for corals and other invertebrates when dosed to your test results.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much will one dose raise my magnesium?\u003c\/strong\u003e Each ml raises magnesium in 1 gallon by about 26 ppm, so a 5 ml dose per 20 gallons nudges it up gradually. Correct low magnesium slowly rather than all at once.\u003c\/p\u003e","brand":"Brightwell Aquatics","offers":[{"title":"250 ml","offer_id":48742355501275,"sku":"MAG250","price":8.14,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48742355534043,"sku":"MAG500","price":13.54,"currency_code":"USD","in_stock":true},{"title":"2 L","offer_id":48742355566811,"sku":"MAG2L","price":29.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_c56b6c64-14c6-498a-b90f-fa83cbbca857.jpg?v=1777900747"},{"product_id":"brightwell-reef-code-a-calcium","title":"Brightwell Aquatics Reef Code A","description":"\u003cp\u003e\u003cstrong\u003eBrightwell Reef Code A\u003c\/strong\u003e is the calcium half of Brightwell's balanced two-part calcium and alkalinity system for reef aquariums. Dosed in equal measure with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-b-alkalinity\"\u003eReef Code B\u003c\/a\u003e, it replenishes the calcium, strontium, and trace minerals that corals, clams, and coralline algae pull from the water as they grow, in the same ratio found in natural seawater. Round out the big three with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-magnesion-magnesium\"\u003eMagnesion\u003c\/a\u003e magnesium, and browse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/brightwell-aquatics\"\u003eBrightwell Aquatics\u003c\/a\u003e reef care.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eHow the Two-Part System Works\u003c\/h3\u003e\n\u003cp\u003eGrowing corals and other reef life constantly pull calcium and carbonate (alkalinity) out of your water. Reef Code A and Reef Code B replace them together, in balance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Code A\u003c\/strong\u003e supplies calcium plus strontium and minor and trace elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Code B\u003c\/strong\u003e supplies the carbonates that make up alkalinity, your tank's buffering capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsed in equal amounts, the two keep calcium and alkalinity rising or holding steady together, just as they occur in natural seawater. Bring magnesium into range first (1,290 to 1,320 ppm) with Magnesion so calcium and alkalinity stay in solution instead of precipitating out.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCalcium-bearing half of a balanced two-part calcium and alkalinity system\u003c\/li\u003e\n\u003cli\u003eAlso supplies strontium and reef trace minerals\u003c\/li\u003e\n\u003cli\u003eIonically balanced to natural seawater when dosed equally with Reef Code B\u003c\/li\u003e\n\u003cli\u003eSimplifies calcium and alkalinity maintenance\u003c\/li\u003e\n\u003cli\u003eReef safe, with no phosphate or silicate\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eDirections for Use\u003c\/h3\u003e\n\u003cp\u003eShake well before use and test your calcium level before dosing. Add 5 ml of Reef Code A per 25 gallons every other day, or as needed, to keep calcium in the 412 to 450 ppm range, and dose an equal amount of Reef Code B to hold alkalinity steady. Used this way, 250 ml treats up to 1,250 gallons. Adjust the dose up or down based on your test results and how quickly your tank consumes calcium.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore you start:\u003c\/strong\u003e bring magnesium to 1,290 to 1,320 ppm with Magnesion. Correct magnesium keeps calcium and carbonate from precipitating, so both stay available to your corals.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#E0F7FA;\"\u003e\n\u003cth style=\"border:1px solid #B2EBF2;padding:5px 8px;text-align:left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border:1px solid #B2EBF2;padding:5px 8px;text-align:left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eNano and smaller reef tanks, or trying the Reef Code system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eMid-size reef tanks with steady calcium demand.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e1 L\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eLarger or coral-heavy systems, with the best value per ml.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eBrightwell Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eReef Code A, calcium component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eSupplies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eCalcium, strontium, and trace minerals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eUse with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eReef Code B (equal amounts), plus Magnesion for magnesium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e250 ml, 500 ml, 1 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eReef safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eCountry of origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-b-alkalinity\"\u003eReef Code B\u003c\/a\u003e is the alkalinity half, dosed in equal amounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-magnesion-magnesium\"\u003eMagnesion\u003c\/a\u003e keeps magnesium in range so calcium and alkalinity stay stable.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/brightwell-aquatics\"\u003eBrightwell Aquatics\u003c\/a\u003e is the full brand lineup.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eAdditives and supplements\u003c\/a\u003e for more reef dosing options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I have to use Reef Code B as well?\u003c\/strong\u003e For a balanced system, yes. Reef Code A and B are designed to be dosed in equal amounts so calcium and alkalinity stay in the natural seawater ratio. Some tanks need slightly different amounts of each based on demand, so test and adjust.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy check magnesium first?\u003c\/strong\u003e Magnesium keeps calcium and carbonate dissolved. If magnesium is low, dosing calcium and alkalinity can cause them to precipitate out instead of feeding your corals. Hold magnesium at 1,290 to 1,320 ppm with Magnesion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe for corals and inverts?\u003c\/strong\u003e Yes. Reef Code A is reef safe and contains no phosphate or silicate. Dose to your test results rather than guessing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much do I need?\u003c\/strong\u003e A rough starting point is 5 ml per 25 gallons every other day, but every tank is different. Test calcium and alkalinity regularly and adjust the dose to match your tank's uptake.\u003c\/p\u003e","brand":"Brightwell Aquatics","offers":[{"title":"250 ml","offer_id":48742369362139,"sku":"RCA250","price":8.14,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48742369394907,"sku":"RCA500","price":12.12,"currency_code":"USD","in_stock":true},{"title":"1 L","offer_id":48742369427675,"sku":"RCA1L","price":19.53,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_db2b08fc-d344-4274-b269-93e09cf86f26.jpg?v=1777901520"},{"product_id":"brightwell-reef-code-b-alkalinity","title":"Brightwell Aquatics Reef Code B","description":"\u003cp\u003e\u003cstrong\u003eBrightwell Reef Code B\u003c\/strong\u003e is the alkalinity half of Brightwell's balanced two-part calcium and alkalinity system for reef aquariums. Dosed in equal measure with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-a-calcium\"\u003eReef Code A\u003c\/a\u003e, it supplies the carbonates that make up your tank's alkalinity, or buffering capacity, in the same ratio found in natural seawater. Round out the big three with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-magnesion-magnesium\"\u003eMagnesion\u003c\/a\u003e magnesium, and browse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/brightwell-aquatics\"\u003eBrightwell Aquatics\u003c\/a\u003e reef care.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eHow the Two-Part System Works\u003c\/h3\u003e\n\u003cp\u003eGrowing corals and other reef life constantly pull calcium and carbonate (alkalinity) out of your water. Reef Code A and Reef Code B replace them together, in balance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Code B\u003c\/strong\u003e supplies the carbonates that raise and hold alkalinity, which stabilizes your pH.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Code A\u003c\/strong\u003e supplies calcium plus strontium and minor and trace elements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsed in equal amounts, the two keep calcium and alkalinity rising or holding steady together, just as they occur in natural seawater. Bring magnesium into range first (1,290 to 1,320 ppm) with Magnesion so calcium and alkalinity stay in solution instead of precipitating out.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCarbonate-bearing half of a balanced two-part calcium and alkalinity system\u003c\/li\u003e\n\u003cli\u003eRaises and maintains alkalinity to stabilize pH\u003c\/li\u003e\n\u003cli\u003eIonically balanced to natural seawater when dosed equally with Reef Code A\u003c\/li\u003e\n\u003cli\u003eContains no phosphate, silicate, or organic material\u003c\/li\u003e\n\u003cli\u003eReef safe\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eDirections for Use\u003c\/h3\u003e\n\u003cp\u003eShake well before use and test your alkalinity before dosing. Each ml of Reef Code B raises the alkalinity of 1 gallon by about 2.22 dKH. For steady maintenance, dose an equal amount to Reef Code A; a common starting point is 5 ml per 25 gallons every other day, adjusted to your test results. If alkalinity is below 7 dKH, you can add up to 5 ml per 10 gallons daily until it reaches your target, then return to maintenance dosing. Aim to keep alkalinity in the 7 to 12 dKH range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore you start:\u003c\/strong\u003e bring magnesium to 1,290 to 1,320 ppm with Magnesion. Correct magnesium keeps calcium and carbonate from precipitating, so both stay available to your corals.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#E0F7FA;\"\u003e\n\u003cth style=\"border:1px solid #B2EBF2;padding:5px 8px;text-align:left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border:1px solid #B2EBF2;padding:5px 8px;text-align:left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eNano and smaller reef tanks, or trying the Reef Code system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eMid-size reef tanks with steady alkalinity demand.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003e1 L\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eLarger or coral-heavy systems, with the best value per ml.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eBrightwell Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eReef Code B, alkalinity component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eSupplies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eCarbonates (alkalinity \/ buffering capacity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eUse with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eReef Code A (equal amounts), plus Magnesion for magnesium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e250 ml, 500 ml, 1 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eContains\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eNo phosphate, silicate, or organic material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003e\u003cstrong\u003eCountry of origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:5px 8px;\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-reef-code-a-calcium\"\u003eReef Code A\u003c\/a\u003e is the calcium half, dosed in equal amounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/brightwell-magnesion-magnesium\"\u003eMagnesion\u003c\/a\u003e keeps magnesium in range so calcium and alkalinity stay stable.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/brightwell-aquatics\"\u003eBrightwell Aquatics\u003c\/a\u003e is the full brand lineup.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eAdditives and supplements\u003c\/a\u003e for more reef dosing options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I have to use Reef Code A as well?\u003c\/strong\u003e For a balanced system, yes. Reef Code A and B are designed to be dosed in equal amounts so calcium and alkalinity stay in the natural seawater ratio. Some tanks need slightly different amounts of each based on demand, so test and adjust.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does alkalinity do for my reef?\u003c\/strong\u003e Alkalinity is your tank's buffering capacity. It keeps pH stable and supplies the carbonates corals use to build their skeletons. Steady alkalinity is one of the keys to healthy coral growth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy check magnesium first?\u003c\/strong\u003e Magnesium keeps calcium and carbonate dissolved. If magnesium is low, dosing calcium and alkalinity can cause them to precipitate out instead of feeding your corals. Hold magnesium at 1,290 to 1,320 ppm with Magnesion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much do I need?\u003c\/strong\u003e A rough starting point is 5 ml per 25 gallons every other day, but every tank is different. Test alkalinity regularly and adjust the dose to match your tank's uptake.\u003c\/p\u003e","brand":"Brightwell Aquatics","offers":[{"title":"250 ml","offer_id":48742421463259,"sku":"RCB250","price":8.14,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48742421496027,"sku":"RCB500","price":12.12,"currency_code":"USD","in_stock":true},{"title":"1 L","offer_id":48742421528795,"sku":"RCB1L","price":19.53,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_43819b8a-02ff-4a23-ae50-e2a46d9f8c72.jpg?v=1777902168"},{"product_id":"seachem-reef-pack-npk-nitrogen-phosphorus-potassium-reef-supplements","title":"Seachem Reef Pack NPK | 3 x 100mL Nitrogen + Phosphorus + Potassium Set","description":"\u003cp\u003eThe \u003cstrong\u003eSeachem Reef Pack NPK\u003c\/strong\u003e is a 3-bottle reef-supplementation kit that takes coral color and macroalgae growth to the next level. Each pack includes \u003cstrong\u003eReef Nitrogen™, Reef Phosphorus™, and Reef Potassium™\u003c\/strong\u003e — three 100 mL bottles of targeted, marine-formulated supplements that let you dial in N, P, and K independently without dosing dissolved organics. Browse more reef care in our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003eSaltwater Collection\u003c\/a\u003e and pair with \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eWater Test Kits\u003c\/a\u003e so you can tune your dosing to actual tank readings.\u003c\/p\u003e\n\n\u003ch3\u003eWhy This Pack\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree reef essentials in one box\u003c\/strong\u003e — Reef Nitrogen, Reef Phosphorus, and Reef Potassium, each in a 100 mL bottle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndependent N, P, and K dosing\u003c\/strong\u003e — correct one limiting nutrient at a time instead of a one-size-fits-all blend.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTargeted reef formula\u003c\/strong\u003e — Seachem’s reef-specific NPK line, not the freshwater Flourish version.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBetter color \u0026amp; growth\u003c\/strong\u003e — balanced N and P in particular drive deeper coral pigmentation and faster macroalgae growth.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo dissolved organics\u003c\/strong\u003e — inorganic formulations avoid feeding nuisance algae or destabilizing skimmer performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrusted brand\u003c\/strong\u003e — backed by Seachem’s decades of marine-supplement chemistry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s in the Pack\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReef Nitrogen™ (100 mL)\u003c\/strong\u003e — raises nitrogen so it stays balanced with phosphorus, supporting optimal coral color and macroalgae growth. Use when nitrate (NO\u003csub\u003e3\u003c\/sub\u003e) is low or undetectable.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReef Phosphorus™ (100 mL)\u003c\/strong\u003e — boosts phosphorus for protein synthesis and metabolism in corals. Use when phosphate (PO\u003csub\u003e4\u003c\/sub\u003e) is low and growth\/color has stalled.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReef Potassium™ (100 mL)\u003c\/strong\u003e — replenishes the third major macronutrient required for coral metabolism and pigmentation. Often depleted by GFO and heavy water changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eAlways test before dosing. Reef Pack NPK is most effective when used with a reef test kit so you can target specific deficiencies rather than dose blindly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTest:\u003c\/strong\u003e Measure nitrate, phosphate, and potassium in your tank.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDose to target:\u003c\/strong\u003e Follow each bottle’s label dosing chart to raise the deficient parameter toward the recommended reef range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRe-test:\u003c\/strong\u003e Wait 24 hours, re-test, and adjust the next dose accordingly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Once parameters are stable, dose to replace daily uptake by corals and macroalgae.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAlways read each individual bottle’s label for full dosing instructions and safety information.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eReef Pack NPK\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003ePack Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eReef Nitrogen 100 mL + Reef Phosphorus 100 mL + Reef Potassium 100 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eBottle Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e3 × 100 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eTank Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eSaltwater \u0026amp; reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eTargets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eNitrogen, phosphorus, and potassium\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eUse With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eReef test kits for targeted dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eReef Safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eYes — safe for fish, corals, and invertebrates when used as directed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eReef Test Kits\u003c\/a\u003e — nitrate, phosphate, and potassium test kits to dose accurately.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/saltwater-refractometer-hard-case-atc-salinity-tester\"\u003eSaltwater Refractometer\u003c\/a\u003e — lock down salinity before tuning trace nutrients.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eMore Reef Additives \u0026amp; Supplements\u003c\/a\u003e — calcium, alkalinity, magnesium, and trace blends.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-mixes\"\u003ePremium Salt Mixes\u003c\/a\u003e — start with a quality salt mix for a stable baseline.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003eMaintenance \u0026amp; Water Care\u003c\/a\u003e — everything else your reef needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to dose all three bottles every day?\u003c\/strong\u003e\u003cbr\u003e\nNot necessarily. Test first — only dose the parameter that’s actually low. Many tanks need only one or two of the three.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the same as the Plant Pack NPK?\u003c\/strong\u003e\u003cbr\u003e\nNo. The Plant Pack NPK uses Flourish Nitrogen, Phosphorus, and Potassium for freshwater planted tanks. \u003cstrong\u003eReef Pack NPK\u003c\/strong\u003e uses the marine-specific Reef Nitrogen, Reef Phosphorus, and Reef Potassium formulas for saltwater reef systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill this raise nutrients too high in a low-nutrient reef?\u003c\/strong\u003e\u003cbr\u003e\nOnly if you over-dose. Reef Pack NPK is designed to \u003cem\u003ecorrect\u003c\/em\u003e low or undetectable nitrate, phosphate, and potassium levels — ULNS (ultra-low-nutrient systems) often need exactly this kind of targeted addition. Dose conservatively and test 24 hours later.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this in a fish-only saltwater tank?\u003c\/strong\u003e\u003cbr\u003e\nReef Pack NPK is designed for reef tanks with corals and macroalgae. Fish-only systems generally don’t need supplemental N, P, or K.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long will the bottles last?\u003c\/strong\u003e\u003cbr\u003e\nDepends entirely on tank size and dose, but at typical maintenance dosing on a 50–100 gallon reef, three 100 mL bottles will last several months.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":48749769851099,"sku":"1340","price":15.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_8e597832-a107-43d1-8726-8d70c6e50ee6.png?v=1778077259"},{"product_id":"seachem-reef-builder","title":"Seachem Reef Builder","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Builder\u003c\/strong\u003e is a dry blend of carbonate salts that raises carbonate alkalinity (KH) in a reef aquarium without immediately changing pH. Alkalinity is what keeps your pH stable and gives stony corals and coralline algae the carbonate they need to build skeleton, so when it drifts low your whole tank gets harder to keep steady. Reef Builder restores it cleanly, and with long term use it gently tends to stabilize pH around 8.3. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy Reefers Use It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaises KH, not pH.\u003c\/strong\u003e Restores carbonate alkalinity without the pH spike, so you can correct alkalinity even when your pH is already where you want it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtects the rest of your chemistry.\u003c\/strong\u003e Used as directed it will not deplete calcium, magnesium, or strontium, which often precipitate out when alkalinity is pushed up carelessly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStabilizes over time.\u003c\/strong\u003e With ongoing use pH tends to settle and hold near the natural reef target of 8.3.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with Reef Buffer.\u003c\/strong\u003e Use the two together to dial in both alkalinity and pH independently.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eDissolve 3 g (about 1\/2 level teaspoon) in at least 250 mL of fresh water, then add it to the tank for every 150 L (40 US gallons), twice a week or as needed to hold your numbers in range. Each 3 g per 150 L raises alkalinity by roughly 0.25 meq\/L (about 0.7 dKH). Do not exceed 12 g per 150 L in a single day. Keep reef alkalinity in the 3 to 5 meq\/L (8 to 14 dKH) range and never let it fall below 2 meq\/L.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e do not directly mix Reef Builder with any calcium, magnesium, or strontium supplement. Add your alkalinity and calcium products on alternate days, or at least 30 minutes apart, so they do not react in the water column.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eReef Builder or Reef Buffer?\u003c\/h3\u003e\n\u003cp\u003eThey sound alike but do different jobs. \u003cstrong\u003eReef Builder\u003c\/strong\u003e raises carbonate alkalinity without affecting pH. \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-buffer-ph-alkalinity-83\"\u003eReef Buffer\u003c\/a\u003e raises carbonate alkalinity and pH together, toward 8.3. Reach for Reef Builder when your pH is already on target and you just need to bring KH up. Reach for Reef Buffer when your pH is running low. The two can be used in the same system.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #E0F7FA;\"\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 6px 10px; text-align: left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 6px 10px; text-align: left;\"\u003eApprox. Doses\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 6px 10px; text-align: left;\"\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003e50 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e~16\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eNano and pico reefs, or trying it out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003e300 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e~100\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eSmall to medium reefs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003e600 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e~200\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eEstablished medium reefs on a regular schedule\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003e1.2 kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e~400\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eLarge or SPS-heavy reefs, best value per dose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 0.9em; color: #555; margin: 6px 0 0;\"\u003eEach dose is 3 g treating 150 L (40 US gallons). Actual usage depends on your tank's alkalinity demand.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px; width: 38%;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eDry carbonate alkalinity (KH) supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eMarine and reef only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003eDose\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e3 g (1\/2 tsp) per 150 L (40 gal), twice weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003eRaises alkalinity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e~0.25 meq\/L (~0.7 dKH) per 3 g \/ 150 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003eTarget range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e3 to 5 meq\/L (8 to 14 dKH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003eEffect on pH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003eNone immediately; stabilizes near 8.3 over time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 6px 10px;\"\u003e50 g, 300 g, 600 g, 1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-advantage-calcium-supplement\"\u003eSeachem Reef Advantage Calcium\u003c\/a\u003e for the calcium side of the balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-advantage-magnesium\"\u003eSeachem Reef Advantage Magnesium\u003c\/a\u003e to keep calcium and alkalinity holding where you set them.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-buffer-ph-alkalinity-83\"\u003eSeachem Reef Buffer\u003c\/a\u003e when you need to raise pH along with alkalinity.\u003c\/li\u003e\n\u003cli\u003eA reliable \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ealkalinity test kit\u003c\/a\u003e so you are always dosing to a real number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does Reef Builder actually do?\u003c\/strong\u003e\u003cbr\u003eIt raises carbonate alkalinity (KH) in a marine tank without immediately changing pH, giving corals and coralline algae the carbonate they need while keeping pH steady.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it raise my pH?\u003c\/strong\u003e\u003cbr\u003eNot right away. Reef Builder is designed to lift alkalinity on its own, and with continued use pH tends to settle near 8.3. If you specifically need to bring pH up, use Reef Buffer instead or alongside it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I dose it at the same time as my calcium supplement?\u003c\/strong\u003e\u003cbr\u003eNo. Do not directly mix it with calcium, magnesium, or strontium products. Dose them on alternate days, or at least 30 minutes apart.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much will one dose move my alkalinity?\u003c\/strong\u003e\u003cbr\u003eRoughly 0.25 meq\/L (about 0.7 dKH) per 3 g in 150 L (40 gallons). Always test and adjust toward the 3 to 5 meq\/L target.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in freshwater?\u003c\/strong\u003e\u003cbr\u003eNo. Reef Builder is formulated for marine and reef aquariums only.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 g","offer_id":48755757318363,"sku":"364","price":3.87,"currency_code":"USD","in_stock":true},{"title":"300 g","offer_id":48755757351131,"sku":"366","price":7.47,"currency_code":"USD","in_stock":true},{"title":"600 g","offer_id":48755757383899,"sku":"363","price":12.75,"currency_code":"USD","in_stock":true},{"title":"1.2 kg","offer_id":48755757416667,"sku":"367","price":23.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0364-Reef-Builder-50-g.png?v=1778225528"},{"product_id":"seachem-reef-advantage-magnesium","title":"Seachem Reef Advantage Magnesium","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Advantage Magnesium\u003c\/strong\u003e is a concentrated blend of magnesium, chloride, and sulfate salts that restores depleted magnesium while keeping ionic ratios close to natural seawater. Magnesium is the element that lets you hold calcium and alkalinity at the same time, so when it runs low your reef numbers get hard to control and pH can sag. Unlike many liquid magnesium supplements, this one contains no ammonia. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy Reefers Use It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps calcium and alkalinity in balance.\u003c\/strong\u003e Proper magnesium is what lets both stay where you want them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo ammonia.\u003c\/strong\u003e A common contaminant in liquid magnesium supplements, left out here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural ratios.\u003c\/strong\u003e Restores magnesium with minimal impact to the other ions in your saltwater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes the usual culprits.\u003c\/strong\u003e Counters magnesium loss from kalkwasser, heavy carbonate dosing, or a low-magnesium salt mix.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eDissolve 5 g (1 level teaspoon) in at least 250 mL (1 cup) of fresh water, then add it to the tank for every 80 litres (about 20 US gallons), twice a week. Each dose raises magnesium by roughly 5 mg\/L. Do not exceed 25 g per 80 L per day, since too much magnesium can pull down carbonate alkalinity. Test magnesium regularly and adjust. Do not mix Reef Advantage Magnesium directly with a carbonate or alkalinity supplement; add them on alternate days or at least 30 minutes apart.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #E0F7FA;\"\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e300 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003enano and single reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e600 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ea single reef tank, regular dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e1.2 kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003elarger reefs and fish rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px; width: 38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef magnesium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eComposition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eConcentrated magnesium, chloride, and sulfate salts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eAmmonia-free\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eYes, unlike many liquid magnesium supplements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eRaises\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eAbout 5 mg\/L magnesium per 5 g dose in 80 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ePowder (measuring scoop included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef and saltwater only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eDose\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e5 g (1 tsp) per 80 L (about 20 gal) twice weekly, dissolved first\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e300 g, 600 g, 1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-advantage-calcium-supplement\"\u003eSeachem Reef Advantage Calcium\u003c\/a\u003e to maintain calcium alongside your magnesium.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-buffer-ph-alkalinity-83\"\u003eSeachem Reef Buffer\u003c\/a\u003e to hold alkalinity, the third leg of reef chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eMagnesium and alkalinity test kits\u003c\/a\u003e so you can dose to your numbers.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eMore reef additives and supplements\u003c\/a\u003e as your system matures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does magnesium matter in a reef tank?\u003c\/strong\u003e\u003cbr\u003eMagnesium keeps calcium and carbonate alkalinity from precipitating out of solution. Without enough of it, you cannot hold both calcium and alkalinity, and pH can drop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat magnesium level should I target?\u003c\/strong\u003e\u003cbr\u003eAim for the natural seawater range, roughly 1250 to 1350 ppm, and test regularly to dose to that target.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix it with my alkalinity supplement?\u003c\/strong\u003e\u003cbr\u003eNo. Dose magnesium and carbonate supplements on alternate days or at least 30 minutes apart so they do not react.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is this better than a liquid magnesium supplement?\u003c\/strong\u003e\u003cbr\u003eIt contains no ammonia, which is a common contaminant in liquid magnesium products, and it is concentrated for efficient dosing.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"300 g","offer_id":48755768197339,"sku":"636","price":6.36,"currency_code":"USD","in_stock":true},{"title":"600 g","offer_id":48755768230107,"sku":"633","price":10.33,"currency_code":"USD","in_stock":true},{"title":"1.2 kg","offer_id":48755768262875,"sku":"637","price":14.18,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0636-Reef-Adv-Magnesium-300-g.png?v=1778225824"},{"product_id":"seachem-reef-advantage-calcium-supplement","title":"Seachem Reef Advantage Calcium","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Advantage Calcium\u003c\/strong\u003e is a non-caustic ionic calcium blend that restores and maintains calcium at natural seawater levels, the foundation stony corals need to build their skeletons. Unlike kalkwasser (limewater), it stays in a safe pH range of 8.3 to 8.6, will not deplete magnesium, and, used as directed, will not pull down alkalinity. It also carries magnesium and strontium in proportionate ratios, so you maintain all three together. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy Reefers Use It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-caustic.\u003c\/strong\u003e Holds a safe pH of 8.3 to 8.6, unlike the high pH of kalkwasser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree elements at once.\u003c\/strong\u003e Maintains calcium along with magnesium and strontium in proportionate ratios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGentle on your numbers.\u003c\/strong\u003e Will not deplete magnesium, and will not crash alkalinity when used as directed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to dial in.\u003c\/strong\u003e Predictable calcium increase per dose makes it simple to hit your target.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eDissolve 5 g (1 level teaspoon) in at least 250 mL (1 cup) of fresh water, then add it to the tank for every 150 litres (about 40 US gallons), twice a week. Each dose raises calcium by roughly 12 mg\/L. Do not exceed 10 g per 150 L per day, and test calcium every couple of weeks to adjust the amount or frequency. Do not mix Reef Advantage Calcium directly with a carbonate or alkalinity supplement; add them on alternate days or at least 30 minutes apart.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #E0F7FA;\"\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e250 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003enano and single reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e500 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ea single reef tank, regular dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e1 kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003elarger reefs and fish rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px; width: 38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eNon-caustic reef calcium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e8.3 to 8.6 (non-caustic, unlike kalkwasser)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eContains\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eIonic calcium with magnesium and strontium (Ca:Mg:Sr 100:5:0.1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eRaises\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eAbout 12 mg\/L calcium per 5 g dose in 150 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ePowder (measuring scoop included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef and saltwater only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eDose\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e5 g (1 tsp) per 150 L (about 40 gal) twice weekly, dissolved first\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e250 g, 500 g, 1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-buffer-ph-alkalinity-83\"\u003eSeachem Reef Buffer\u003c\/a\u003e to maintain alkalinity, the partner to calcium in coral growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eCalcium and alkalinity test kits\u003c\/a\u003e so you can dose to your numbers.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eMore reef additives and supplements\u003c\/a\u003e to round out magnesium and trace elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003eSaltwater livestock and supplies\u003c\/a\u003e for the rest of your reef.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow is this different from kalkwasser?\u003c\/strong\u003e\u003cbr\u003eReef Advantage Calcium is non-caustic, so it will not spike pH the way limewater can. It also will not deplete magnesium and includes magnesium and strontium in the mix.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix it with my alkalinity supplement?\u003c\/strong\u003e\u003cbr\u003eNo. Never combine calcium and carbonate supplements directly. Dose them on alternate days or at least 30 minutes apart so they do not react.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to dissolve the powder first?\u003c\/strong\u003e\u003cbr\u003eYes. Dissolve each dose in at least a cup of fresh water before adding it to the tank.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat calcium level should I aim for?\u003c\/strong\u003e\u003cbr\u003eKeep calcium in the natural seawater range, roughly 400 to 450 ppm, and test regularly to dose to that target.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"250 g","offer_id":48755794804955,"sku":"316","price":8.99,"currency_code":"USD","in_stock":true},{"title":"500 g","offer_id":48755794837723,"sku":"313","price":15.46,"currency_code":"USD","in_stock":true},{"title":"1 kg","offer_id":48755794870491,"sku":"317","price":26.74,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0316-Reef-Adv-Calcium-250-g.png?v=1778226402"},{"product_id":"seachem-reef-pack-enhancer-growth-kit","title":"Seachem Reef Pack: Enhancer","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Pack: Enhancer\u003c\/strong\u003e takes reef supplementation to the next level once your calcium and alkalinity foundation is dialed in. This Level 2 kit bundles three gluconate-based supplements that accelerate coral growth and round out the elements densely stocked reefs burn through: Reef Calcium, Reef Strontium, and Reef Iodide. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhat's in the Pack\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Calcium.\u003c\/strong\u003e A bioavailable polygluconate-complexed calcium that maintains calcium without altering pH, feeds corals a source of metabolic energy for peak growth, and resists precipitation and alkalinity depletion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Strontium.\u003c\/strong\u003e A gluconate strontium supplement that restores and maintains strontium in densely populated reefs, with the same gluconate boost to coral growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Iodide.\u003c\/strong\u003e Maintains iodide at the levels soft corals and invertebrates need to stay healthy and colorful.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy Add the Enhancer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccelerates growth.\u003c\/strong\u003e Polygluconate calcium delivers calcium plus usable energy for faster coral growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for stocked reefs.\u003c\/strong\u003e Replenishes strontium and iodide that heavy coral and invert loads consume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep up from the basics.\u003c\/strong\u003e The natural next layer after a solid calcium and alkalinity routine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef safe.\u003c\/strong\u003e Formulated for saltwater reef systems and the life in them.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eUse the Enhancer pack once your calcium and alkalinity are stable, ideally after working with the Reef Pack Fundamentals routine. Dose Reef Calcium to accelerate growth, and add Reef Strontium and Reef Iodide to match the demand of your corals and invertebrates. Follow the dosing chart on each bottle, test your levels, and adjust gradually rather than chasing big swings.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px; width: 38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef supplement enhancement pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef Calcium (polygluconate calcium), Reef Strontium, Reef Iodide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eEstablished reefs ready to accelerate growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eLiquid supplements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef and saltwater only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eReef safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-pack-fundamentals-starter-kit\"\u003eSeachem Reef Pack: Fundamentals\u003c\/a\u003e for the calcium, alkalinity, and trace foundation this pack builds on.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eCalcium, strontium, and iodine test kits\u003c\/a\u003e so you can dose to your numbers.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/corals\"\u003eCorals and frags\u003c\/a\u003e to grow out with your enhanced dosing routine.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eMore reef additives and supplements\u003c\/a\u003e as your system matures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat comes in the Enhancer pack?\u003c\/strong\u003e\u003cbr\u003eThree Seachem supplements: Reef Calcium (a polygluconate calcium for accelerated growth), Reef Strontium, and Reef Iodide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is this different from the Fundamentals pack?\u003c\/strong\u003e\u003cbr\u003eFundamentals covers the calcium, alkalinity, and trace foundation. Enhancer layers on growth accelerators and the strontium and iodide that stocked reefs use up. Many reefers run both.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a stable tank before using it?\u003c\/strong\u003e\u003cbr\u003eYes. Get calcium and alkalinity stable first, then add the Enhancer supplements to push growth and replenish strontium and iodide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I test before dosing?\u003c\/strong\u003e\u003cbr\u003eYes. Test calcium, strontium, and iodide and dose to your results, adjusting gradually as corals grow.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":48755800473819,"sku":"1345","price":15.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/1345-Reef-Pack-Enhancer.png?v=1778226915"},{"product_id":"seachem-reef-pack-fundamentals-starter-kit","title":"Seachem Reef Pack: Fundamentals","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Pack: Fundamentals\u003c\/strong\u003e is a foundational supplement kit that gives new reef keepers the three things stony corals need most: calcium, carbonates, and the vitamins and trace elements that drive vitality and color. Calcium and carbonates build coral skeletons, and if either runs low, growth stalls and coral health declines. This pack bundles Reef Complete, Reef Carbonate, and Reef Plus so you can dial in a simple, complete dosing routine from day one. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhat's in the Pack\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Complete.\u003c\/strong\u003e A concentrated ionic calcium supplement that restores and maintains calcium to natural seawater levels without affecting pH, with magnesium and strontium included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Carbonate.\u003c\/strong\u003e A concentrated carbonate and bicarbonate source that holds up alkalinity, the other half of the calcium and carbonate balance corals depend on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Plus.\u003c\/strong\u003e Vitamins, amino acids, and trace elements that boost coral vitality, health, and color, which in turn supports faster growth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy It Works for Beginners\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCovers the essentials.\u003c\/strong\u003e Calcium, alkalinity, and trace nutrition in one simple kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced approach.\u003c\/strong\u003e Reef Complete and Reef Carbonate keep the calcium and alkalinity relationship in check.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo guesswork on what to buy.\u003c\/strong\u003e The three core supplements every reef needs, bundled together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef safe.\u003c\/strong\u003e Formulated for saltwater reef systems and the corals in them.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eTest calcium and alkalinity regularly and dose to your results. Use Reef Complete to keep calcium in the natural seawater range and Reef Carbonate to maintain alkalinity, adding them at separate times or spots in the tank so they do not react with each other. Dose Reef Plus a few times a week for vitamins, amino acids, and trace elements. Follow the dosing chart on each bottle for exact amounts, and adjust gradually as your corals grow and demand more.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px; width: 38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef supplement starter pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef Complete (calcium), Reef Carbonate (alkalinity), Reef Plus (vitamins, amino acids, trace elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eNew reef keepers building a dosing routine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eLiquid supplements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef and saltwater only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eReef safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eCalcium and alkalinity test kits\u003c\/a\u003e so you can dose to your numbers.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-buffer-ph-alkalinity-83\"\u003eSeachem Reef Buffer\u003c\/a\u003e to support pH alongside your alkalinity dosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/corals\"\u003eCorals and frags\u003c\/a\u003e to grow out with your new dosing routine.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eMore reef additives and supplements\u003c\/a\u003e as your system matures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat comes in the Fundamentals pack?\u003c\/strong\u003e\u003cbr\u003eThree Seachem supplements: Reef Complete for calcium, Reef Carbonate for alkalinity, and Reef Plus for vitamins, amino acids, and trace elements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a good starting point for a new reef?\u003c\/strong\u003e\u003cbr\u003eYes. It covers the three core needs of a growing reef in one kit, so you are not guessing about what to buy first.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to test my water?\u003c\/strong\u003e\u003cbr\u003eYes. Dose to your test results, especially calcium and alkalinity, and adjust as your corals grow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I dose the calcium and carbonate together?\u003c\/strong\u003e\u003cbr\u003eNo. Add Reef Complete and Reef Carbonate at separate times or in different spots so they do not react with each other before mixing into the tank.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":48755804373211,"sku":"1335","price":15.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/reef-pack-fundamentals.jpg?v=1778226986"},{"product_id":"seachem-reef-buffer-ph-alkalinity-83","title":"Seachem Reef Buffer","description":"\u003cp\u003e\u003cstrong\u003eSeachem Reef Buffer\u003c\/strong\u003e raises and holds reef pH at 8.3 while also lifting carbonate alkalinity, the two numbers that keep stony corals and coralline algae thriving. Unlike plain sodium bicarbonate, it is a blended carbonate and bicarbonate buffer with a higher pK (about 8.6 in saltwater) that is formulated to overcome the organic acids reef tanks produce, so it cannot accidentally overshoot pH to a dangerous level. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy Reefers Use It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaises pH and alkalinity together.\u003c\/strong\u003e Lifts pH toward 8.3 and adds carbonate alkalinity in one product.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef tuned.\u003c\/strong\u003e The higher pK is built to counter the organic acids that drag reef pH down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill not overshoot.\u003c\/strong\u003e Holds at 8.3 rather than pushing pH dangerously high.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlended formula.\u003c\/strong\u003e Carbonate and bicarbonate salts, not just baking soda.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eUse 5 g (1 level teaspoon) for every 150 litres (about 40 US gallons) to raise pH by roughly 0.1 unit, which also raises alkalinity by about 0.5 meq\/L. In an established reef, dosing every few days to twice a week is usually enough to hold your target. Do not let alkalinity climb above 6 meq\/L, and never mix Reef Buffer directly with calcium, magnesium, or strontium supplements. Always test pH and alkalinity before and during dosing.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #E0F7FA;\"\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e50 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003enano reefs and occasional correction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e250 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ea single reef tank, regular maintenance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e500 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003elarger reefs or frequent dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e1 kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ebig systems and fish rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px; width: 38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef pH and alkalinity buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eTargets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003epH 8.3 (will not overshoot)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eAlkalinity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eRaises alkalinity by about 0.5 meq\/L per dose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eComposition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eBlended carbonate and bicarbonate salts (pK about 8.6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ePowder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eReef and saltwater only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eDose\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e5 g (1 tsp) per 150 L (about 40 gal), as needed to hold target\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e50 g, 250 g, 500 g, 1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-marine-buffer-saltwater-ph-83\"\u003eSeachem Marine Buffer\u003c\/a\u003e for fish-only marine tanks that need pH support without the reef-tuned formula.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003epH and alkalinity test kits\u003c\/a\u003e to track your numbers before and during dosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eCalcium, magnesium, and trace supplements\u003c\/a\u003e to balance the rest of your reef chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003eSaltwater livestock and supplies\u003c\/a\u003e for the rest of your reef.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between Reef Buffer and Reef Builder?\u003c\/strong\u003e\u003cbr\u003eReef Buffer mainly affects pH, raising both pH and alkalinity. Reef Builder mainly affects alkalinity and is used to raise alkalinity without changing pH. Many reefers keep both on hand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in a freshwater or fish-only tank?\u003c\/strong\u003e\u003cbr\u003eIt is made for reef and saltwater systems. For a fish-only marine tank, Marine Buffer is a better fit, and for freshwater you should use a freshwater alkaline buffer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it raise my pH too high?\u003c\/strong\u003e\u003cbr\u003eNo. Reef Buffer is designed to hold pH at 8.3 and will not overshoot to dangerous levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix it with my calcium or magnesium supplement?\u003c\/strong\u003e\u003cbr\u003eNo. Never combine Reef Buffer directly with calcium, magnesium, or strontium additives. Dose them separately and keep alkalinity below 6 meq\/L.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 g","offer_id":48755912966363,"sku":"674","price":3.87,"currency_code":"USD","in_stock":false},{"title":"250 g","offer_id":48755912999131,"sku":"676","price":7.47,"currency_code":"USD","in_stock":true},{"title":"500 g","offer_id":48755913031899,"sku":"673","price":12.75,"currency_code":"USD","in_stock":false},{"title":"1 kg","offer_id":48755913064667,"sku":"677","price":23.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0674-Reef-Buffer-50-g.png?v=1778229979"},{"product_id":"seachem-marine-buffer-saltwater-ph-83","title":"Seachem Marine Buffer","description":"\u003cp\u003e\u003cstrong\u003eSeachem Marine Buffer\u003c\/strong\u003e safely raises and holds marine pH at 8.3, the target range for saltwater and reef aquariums. Unlike plain sodium bicarbonate, it is a blended buffer that will not push pH above 8.3 even if you overdose, so it is forgiving and easy to use. Each dose also nudges alkalinity up by about 1 meq\/L, helping stabilize the whole carbonate system. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives and supplements\u003c\/a\u003e and the rest of the \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/seachem\"\u003eSeachem lineup\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eWhy Reefers Use It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets pH 8.3.\u003c\/strong\u003e Brings low saltwater pH up to the ideal marine range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill not overshoot.\u003c\/strong\u003e It cannot raise pH above 8.3, even if you add too much.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlended formula.\u003c\/strong\u003e Carbonate and bicarbonate salts of sodium, magnesium, calcium, strontium, and potassium, not just baking soda.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports alkalinity.\u003c\/strong\u003e Each dose raises alkalinity by roughly 1 meq\/L.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eTo raise pH, add 5 g (1 level teaspoon) for every 80 litres (about 20 US gallons) once daily until pH stabilizes at 8.3, which can take anywhere from a day to a week. Raise pH gradually, no more than about 0.2 units per day, to avoid stressing livestock. Once stable, dose every two to four weeks as needed to hold 8.3. Always test pH and alkalinity before and during dosing.\u003c\/p\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #E0F7FA;\"\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #B2EBF2; padding: 7px 10px; text-align: left;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e50 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003enano and small marine tanks, occasional correction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e250 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ea single reef tank, regular maintenance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e500 g\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003elarger tanks or frequent dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003e1 kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ebig systems and fish rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 0.95em; margin: 6px 0 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px; width: 38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eMarine pH buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eTargets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003epH 8.3 (will not overshoot)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eAlkalinity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eRaises alkalinity by about 1 meq\/L per dose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eComposition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eBlended carbonate and bicarbonate salts (Na, Mg, Ca, Sr, K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003ePowder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003eSaltwater and reef only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eDose to raise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e5 g (1 tsp) per 80 L (about 20 gal) daily until 8.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #B2EBF2; padding: 7px 10px;\"\u003e50 g, 250 g, 500 g, 1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003epH and alkalinity test kits\u003c\/a\u003e to track your numbers before and during dosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-mixes\"\u003eSalt mixes\u003c\/a\u003e for water changes that support stable chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eAdditives and supplements\u003c\/a\u003e to round out calcium, magnesium, and trace elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003eSaltwater livestock and supplies\u003c\/a\u003e for the rest of your reef.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 16px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #006064; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill Marine Buffer push my pH too high?\u003c\/strong\u003e\u003cbr\u003eNo. It is designed to stop at 8.3 and will not raise pH above that level, even if overdosed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in a freshwater tank?\u003c\/strong\u003e\u003cbr\u003eNo. Marine Buffer is for saltwater and reef tanks only. For freshwater, use a freshwater alkaline buffer instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it raise alkalinity as well as pH?\u003c\/strong\u003e\u003cbr\u003eYes. Each dose raises alkalinity by roughly 1 meq\/L, which helps keep the carbonate system stable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow quickly should I raise pH?\u003c\/strong\u003e\u003cbr\u003eGo slowly. Aim to raise pH no more than about 0.2 units per day so corals, fish, and invertebrates are not stressed.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 g","offer_id":48755918209243,"sku":"344","price":3.87,"currency_code":"USD","in_stock":false},{"title":"250 g","offer_id":48755918242011,"sku":"346","price":7.47,"currency_code":"USD","in_stock":true},{"title":"500 g","offer_id":48755918274779,"sku":"343","price":12.75,"currency_code":"USD","in_stock":false},{"title":"1 kg","offer_id":48755918307547,"sku":"347","price":23.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0344-Marine-Buffer-50-g.png?v=1778230487"},{"product_id":"red-sea-trace-colors-a-b-c-d-pack","title":"Red Sea Trace Colors A\/B\/C\/D Pack","description":"\u003cp\u003e\u003cstrong\u003eRed Sea Trace Colors A\/B\/C\/D Pack\u003c\/strong\u003e is a complete four-bottle supplement set that delivers the 31 minor and trace elements stony corals use to build skeleton and develop pigment. Each bottle targets a specific element group tied to a color pathway or biological function — pair with Red Sea's \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-no3-po4-x-nopox-nitrate-phosphate-reducer-500-ml-16-oz\"\u003eNO3:PO4-X NOPOX\u003c\/a\u003e for nutrient control and browse our full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives \u0026amp; supplements\u003c\/a\u003e lineup.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eWhat's in the Pack\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA — Halogens\u003c\/strong\u003e (Iodine, Bromine, Fluorine)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eB — Potassium \u0026amp; Boron\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eC — Iron + 7 Complementary Metals\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eD — 18 Bioactive Trace Elements\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eHow Coral Colors Develop\u003c\/h3\u003e\n\u003cp\u003eThe elements in each supplement are grouped by biological function and tied to specific color pigments — Pink, Red, Green\/Yellow, and Purple\/Blue — that stony corals produce in their soft tissue. All 31 elements are required by every stony coral regardless of the colors it displays, so dosing the full A\/B\/C\/D set keeps pigment chemistry stable across mixed-reef systems.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eDosing\u003c\/h3\u003e\n\u003cp\u003eDose only what your aquarium actually consumes. Measure consumption with the matching Red Sea test kits, then dial in the daily volume. Pair with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-trace-colors-pro-multi-test-kit-iodine-potassium-iron\"\u003eTrace Colors PRO Multi Test Kit\u003c\/a\u003e (Iodine, Potassium, Iron) and the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-algae-control-pro-test-kit\"\u003eAlgae Control Pro Test Kit\u003c\/a\u003e to track levels precisely, and run the full Reef Care Program for best color expression.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.95em;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eRed Sea\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eReef Care Program — Coral Colors\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eFour bottles: Coral Colors A, B, C, D\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003ePack Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e4 × 100 ml (3.38 fl oz each)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eWater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSaltwater (reef)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSPS-dominant, mixed-reef, and pigment-focused systems\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eUse With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eReef Foundation A\/B\/C, Trace Colors PRO test kit, NO3:PO4-X NOPOX\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-pro-multi-test-kit-ca-alk-mg\"\u003eRed Sea Reef Foundation Pro Multi Test Kit (Ca, Alk, Mg)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-trace-colors-pro-multi-test-kit-iodine-potassium-iron\"\u003eRed Sea Trace Colors PRO Multi Test Kit (I, K, Fe)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-foundation-c-magnesium-powder-1kg-reef-supplement\"\u003eRed Sea Foundation C Magnesium Powder 1 KG\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-energy-ab-plus-coral-food-500-ml\"\u003eRed Sea Reef Energy AB+ Coral Food\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/red-sea\"\u003eBrowse the full Red Sea collection\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I have to dose all four bottles?\u003c\/strong\u003e\u003cbr\u003e\nYes. Every stony coral uses elements from all four groups regardless of which colors it displays, so skipping one creates an imbalance that limits pigment expression.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow much do I dose?\u003c\/strong\u003e\u003cbr\u003e\nDose only what your tank actually consumes. Start low, test with the matching kits, and increase incrementally — overdosing trace elements can do more harm than good.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this enough on its own?\u003c\/strong\u003e\u003cbr\u003e\nNo. Coral Colors A\/B\/C\/D handles the trace and minor elements. You also need to maintain Calcium, Alkalinity, and Magnesium using Red Sea's Reef Foundation A\/B\/C system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I dose this in a fish-only or FOWLR tank?\u003c\/strong\u003e\u003cbr\u003e\nIt's designed for reef tanks with stony corals. In a fish-only system there's no consumer for these elements and they'll just accumulate — skip it.\u003c\/p\u003e","brand":"Red Sea","offers":[{"title":"Default Title","offer_id":48784857137371,"sku":"R22040","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_bd0ef021-be7e-4851-b397-3e29fc259165.jpg?v=1779135571"},{"product_id":"red-sea-foundation-c-magnesium-powder-1kg-reef-supplement","title":"Red Sea Foundation C Magnesium Powder 1 KG (2.2lb)","description":"\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eMagnesium supplement for balanced formation of coral skeleton\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eIt's all in the balance.\u003c\/strong\u003e Calcium, Magnesium, Strontium, and Carbonate are the basic foundation elements of coral skeletons. All of these elements need to be available in balanced proportions for positive coral growth — and Magnesium is the one most reefers forget until corals stop growing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRed Sea Foundation C\u003c\/strong\u003e is a concentrated magnesium powder (Mg + minor and trace elements) designed to be dosed alongside Foundation A (Calcium) and Foundation B (Alkalinity) to maintain natural seawater ionic balance in any reef tank. Browse the full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater supplies\u003c\/a\u003e lineup.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eWhy Magnesium Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStops calcium\/alkalinity precipitation\u003c\/strong\u003e — at low Mg levels, Ca and Alk react and crash. Holding Mg at ~1300 ppm keeps the foundation elements stable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired for coralline growth\u003c\/strong\u003e — coralline algae uses magnesium for its skeleton just like SPS corals do.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrace blend included\u003c\/strong\u003e — Foundation C is more than just MgCl₂; it includes minor and trace elements found in natural seawater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with A \u0026amp; B\u003c\/strong\u003e — completes the Red Sea Foundation Program (A=Ca, B=Alk, C=Mg).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest first\u003c\/strong\u003e — measure your current Mg with a reliable reef test kit. Target: 1280–1340 ppm. Don't dose blindly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDissolve in RO\/DI water\u003c\/strong\u003e — mix 1 KG of Foundation C into roughly 5 L of RO\/DI water (per Red Sea instructions; refer to the label for exact dosing per ppm raise).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDose slowly\u003c\/strong\u003e — never raise Mg by more than ~100 ppm per day. Sudden swings stress corals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintain with regular testing\u003c\/strong\u003e — recheck weekly. SPS-heavy tanks typically need ongoing Mg dosing as corals deplete the supply.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:6px 0 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;width:42%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eRed Sea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eReef Foundation C (Magnesium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e1 KG (2.2 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eConcentrated powder (dissolve in RO\/DI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eReef aquariums — magnesium maintenance \u0026amp; correction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eTarget Mg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e1280–1340 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003ePairs With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eFoundation A (Ca), Foundation B (Alk)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eThe Red Sea Foundation Program\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-a-calcium-powder-1kg\"\u003eFoundation A — Calcium Powder 1 KG\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-b-alkalinity-powder-1kg\"\u003eFoundation B — Alkalinity Powder 1 KG\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoundation C — Magnesium Powder 1 KG\u003c\/strong\u003e (this product)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-pro-multi-test-kit-ca-alk-mg\"\u003eFoundation Pro Multi Test Kit (Ca, Alk, Mg)\u003c\/a\u003e — test all three with one kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/aquaforest-af-magnesium-test-kit-saltwater-reef\"\u003eAquaforest AF Magnesium Test Kit\u003c\/a\u003e — alternative Mg test\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eAll water testing kits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eAll aquarium additives \u0026amp; supplements\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-mixes\"\u003eSalt mixes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does 1 KG raise Mg?\u003c\/strong\u003e\u003cbr\u003e\nA 1 KG bag dissolved in 5 L of RO\/DI water yields a concentrated stock solution. Refer to the label for exact dose-per-ppm-raise calculations based on your tank volume. As a rough rule, the bag will treat hundreds of gallons of tank water over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I dose this dry?\u003c\/strong\u003e\u003cbr\u003e\nNo — always dissolve in RO\/DI water first. Dosing the powder directly can crash local water chemistry and stress nearby corals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I test Mg?\u003c\/strong\u003e\u003cbr\u003e\nWeekly is standard for established reef tanks. Test more often if you've recently corrected a low Mg reading or added significant SPS coral.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it reef safe?\u003c\/strong\u003e\u003cbr\u003e\nYes — Foundation C is formulated specifically for marine reef aquariums when dosed at the recommended rate.\u003c\/p\u003e","brand":"Red Sea","offers":[{"title":"Default Title","offer_id":48784859693275,"sku":"R22037","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_9653f8e9-8383-4611-872f-6e633ed5d906.jpg?v=1779135747"},{"product_id":"red-sea-reef-foundation-a-calcium-powder-1kg","title":"Red Sea Foundation A Calcium+ Powder 1 KG (2.2lb)","description":"\u003cp\u003e\u003cstrong\u003eRed Sea Reef Foundation A\u003c\/strong\u003e is the calcium supplement in Red Sea's Reef Foundation ABC program. This \u003cstrong\u003e1 kg (2.2 lb)\u003c\/strong\u003e powder delivers calcium plus strontium and the minor elements found in coral skeletons, in the same ratio corals use to grow—an economical way to keep calcium dialed in for thriving SPS and LPS reefs.\u003c\/p\u003e\n\u003cp\u003eBuild the full program with more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/red-sea\"\u003eRed Sea\u003c\/a\u003e reef care and \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives \u0026amp; supplements\u003c\/a\u003e at Squeaky's Aquatics.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhy Reef Foundation A\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintains calcium\u003c\/strong\u003e — replenishes the calcium corals consume as they build their skeletons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkeleton-ratio blend\u003c\/strong\u003e — includes strontium and minor elements in the proportion found in coral skeletons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart of the ABC system\u003c\/strong\u003e — works alongside Foundation B (Alkalinity) and Foundation C (Magnesium) for balanced growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomical 1 kg powder\u003c\/strong\u003e — far more dosing per dollar than pre-mixed liquids; great for larger systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMake your own solution\u003c\/strong\u003e — dissolve into a stock dosing solution or add directly per the program.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eDosing \u0026amp; Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDose to your tank's measured calcium uptake, following Red Sea's Reef Foundation program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever add more than 60 g at once\u003c\/strong\u003e, regardless of tank size; space larger amounts 10 minutes apart to avoid precipitation.\u003c\/li\u003e\n\u003cli\u003eTest calcium weekly and keep Calcium, Alkalinity, and Magnesium in balance.\u003c\/li\u003e\n\u003cli\u003eFor a stock solution, dissolve 1 kg into roughly 550 L (per Red Sea's Calcium+ guidelines).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0 4px;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eRed Sea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eReef Foundation A — Calcium+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePowder concentrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e1 kg (2.2 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eMaintains\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCalcium (plus strontium \u0026amp; minor elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eProgram\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eUse with Foundation B (Alk) \u0026amp; C (Mg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eFor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-b-alkalinity-powder-1kg\"\u003eRed Sea Reef Foundation B (KH\/Alkalinity) Powder\u003c\/a\u003e — the alkalinity half of the program.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-c-magnesium-powder-1kg\"\u003eRed Sea Reef Foundation C (Magnesium) Powder\u003c\/a\u003e — keeps Ca \u0026amp; Alk in balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-pro-multi-test-kit-ca-alk-mg\"\u003eRed Sea Reef Foundation Pro Multi Test Kit\u003c\/a\u003e — test Ca, Alk \u0026amp; Mg to dose accurately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does Foundation A do?\u003c\/strong\u003e It maintains calcium—along with strontium and minor elements—so corals have the building blocks they need for skeletal growth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePowder vs. liquid—what's the difference?\u003c\/strong\u003e The powder is a concentrated, more economical form. You dose it per the program or dissolve it into your own stock solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much should I dose?\u003c\/strong\u003e It depends on your tank's calcium uptake—test weekly and dose to demand. Never add more than 60 g at once.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need all three (A, B, C)?\u003c\/strong\u003e For balanced coral growth, yes—calcium, alkalinity, and magnesium must be kept in proportion.\u003c\/p\u003e","brand":"Red Sea","offers":[{"title":"Default Title","offer_id":48784860250331,"sku":"R22017","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_cedc0a20-b271-4a28-b655-4666234761e9.jpg?v=1779135838"},{"product_id":"red-sea-reef-foundation-b-alkalinity-powder-1kg","title":"Red Sea Foundation B KH\/Alkalinity Powder 1 KG (2.2lb)","description":"\u003cp\u003e\u003cstrong\u003eRed Sea Reef Foundation B\u003c\/strong\u003e is the alkalinity (KH) supplement in Red Sea's Reef Foundation ABC program. This \u003cstrong\u003e1 kg (2.2 lb)\u003c\/strong\u003e powder delivers the carbonate and bicarbonate buffer that stabilizes pH and supplies the alkalinity corals draw on to build their skeletons—an economical way to keep KH rock-steady in busy SPS and LPS reef tanks.\u003c\/p\u003e\n\u003cp\u003eBuild the full program with more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/red-sea\"\u003eRed Sea\u003c\/a\u003e reef care and \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eadditives \u0026amp; supplements\u003c\/a\u003e at Squeaky's Aquatics.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhy Reef Foundation B\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStabilizes alkalinity \u0026amp; pH\u003c\/strong\u003e — replaces the carbonate corals consume as they grow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart of the ABC system\u003c\/strong\u003e — works alongside Foundation A (Calcium) and Foundation C (Magnesium) for balanced skeletal growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomical 1 kg powder\u003c\/strong\u003e — far more dosing per dollar than pre-mixed liquids; ideal for larger systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMake your own solution\u003c\/strong\u003e — dissolve into a stock dosing solution or add directly per the program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef-grade purity\u003c\/strong\u003e — formulated for marine reef aquariums.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eDosing \u0026amp; Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDose to your tank's measured alkalinity uptake, following Red Sea's Reef Foundation program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever add more than 60 g at once\u003c\/strong\u003e, regardless of tank size; space larger amounts 10 minutes apart to avoid precipitation.\u003c\/li\u003e\n\u003cli\u003eTest alkalinity weekly and keep Calcium, Alkalinity, and Magnesium in balance.\u003c\/li\u003e\n\u003cli\u003eFor a stock solution, dissolve 1 kg into roughly 100 L (per Red Sea's KH guidelines).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0 4px;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eRed Sea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eReef Foundation B — KH\/Alkalinity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePowder concentrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e1 kg (2.2 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eMaintains\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbonate alkalinity (KH) \u0026amp; stable pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eProgram\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eUse with Foundation A (Ca) \u0026amp; C (Mg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eFor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-a-calcium-powder-1kg\"\u003eRed Sea Reef Foundation A (Calcium) Powder\u003c\/a\u003e — the calcium half of the program.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-c-magnesium-powder-1kg\"\u003eRed Sea Reef Foundation C (Magnesium) Powder\u003c\/a\u003e — keeps Ca \u0026amp; Alk in balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-pro-multi-test-kit-ca-alk-mg\"\u003eRed Sea Reef Foundation Pro Multi Test Kit\u003c\/a\u003e — test Ca, Alk \u0026amp; Mg to dose accurately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does Foundation B do?\u003c\/strong\u003e It maintains carbonate alkalinity (KH), the buffer that stabilizes pH and provides the carbonate corals use to build their skeletons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePowder vs. liquid—what's the difference?\u003c\/strong\u003e The powder is a concentrated, more economical form. You dose it per the program or dissolve it into your own stock solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much should I dose?\u003c\/strong\u003e It depends on your tank's alkalinity uptake—test weekly and dose to demand. Never add more than 60 g at once.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need all three (A, B, C)?\u003c\/strong\u003e For balanced coral growth, yes—calcium, alkalinity, and magnesium must be kept in proportion.\u003c\/p\u003e","brand":"Red Sea","offers":[{"title":"Default Title","offer_id":48784860676315,"sku":"R22027","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_1e20b627-00bc-44d3-bafb-e80829d74266.jpg?v=1779135929"},{"product_id":"seachem-reef-calcium-bioavailable-liquid-supplement","title":"Seachem Reef Calcium","description":"\u003cp\u003eSeachem \u003cstrong\u003eReef Calcium\u003c\/strong\u003e is a concentrated bioavailable polygluconate complex of calcium that supports the rapid uptake required by stony corals, coralline algae, and other reef invertebrates. Unlike standard calcium chloride or calcium hydroxide supplements, the polygluconate form is far less likely to be lost as a precipitate, so more of every dose reaches your coral.\u003c\/p\u003e\n\n\u003cp\u003eUse it alongside \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eour full additives and supplements collection\u003c\/a\u003e, verify dose with a \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-calcium-pro-test-kit\"\u003ecalcium test kit\u003c\/a\u003e, and pair with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-prime-complete-concentrated-water-conditioner\"\u003eSeachem Prime\u003c\/a\u003e for routine water changes.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBioavailable polygluconate complex\u003c\/strong\u003e, taken up directly by stony corals and coralline algae\u003c\/li\u003e\n\u003cli\u003eMinimal precipitation, more of each dose stays in solution\u003c\/li\u003e\n\u003cli\u003eDoes not deplete strontium, magnesium, or other reef elements\u003c\/li\u003e\n\u003cli\u003eCompatible with all standard 2-part and balanced reef dosing programs\u003c\/li\u003e\n\u003cli\u003eAvailable in three sizes for nano up to large reef systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eDosing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard dose:\u003c\/strong\u003e 1 capful (5 mL) per 80 L (20 US gallons) once or twice per week\u003c\/li\u003e\n\u003cli\u003eEach capful raises calcium by approximately 1 mg\/L per 80 L\u003c\/li\u003e\n\u003cli\u003eTarget calcium for reef tanks is typically 380 to 450 mg\/L\u003c\/li\u003e\n\u003cli\u003eTest weekly and adjust dose to match consumption\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;width:35%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eReef calcium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eLiquid, polygluconate complex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eWater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSaltwater reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eReef Safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-calcium-pro-test-kit\"\u003eRed Sea Calcium Pro Test Kit\u003c\/a\u003e for weekly verification\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/salifert-calcium-test-kit\"\u003eSalifert Calcium Test Kit\u003c\/a\u003e as a budget option\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-prime-complete-concentrated-water-conditioner\"\u003eSeachem Prime\u003c\/a\u003e for water changes\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eBrowse all reef supplements\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill Reef Calcium replace my 2-part?\u003c\/strong\u003e\u003cbr\u003e\nFor light to moderate reef demand, yes. For SPS-dominant or high-demand reefs, use Reef Calcium alongside an alkalinity supplement to keep Ca and Alk balanced.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it raise alkalinity?\u003c\/strong\u003e\u003cbr\u003e\nNo, this is calcium only. Pair with an alkalinity supplement to maintain balance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it safe with inverts and fish?\u003c\/strong\u003e\u003cbr\u003e\nYes, when used at the recommended dose Reef Calcium is safe for fish, corals, and invertebrates including clams and shrimp.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":48817219305691,"sku":null,"price":5.28,"currency_code":"USD","in_stock":false},{"title":"250 mL","offer_id":48817219338459,"sku":"356","price":7.52,"currency_code":"USD","in_stock":true},{"title":"500 mL","offer_id":48817219371227,"sku":null,"price":11.55,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0356-Reef-Calcium-250-mL.png?v=1779969881"},{"product_id":"quantum-aragonite-a-calcium","title":"Quantum Aragonite A - Calcium","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #003c3f; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #d0e8ea; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f5fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #f0fafb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #003c3f; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f7fcfd; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #006064; background: #fff; color: #006064; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #B2EBF2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-250:checked ~ .aq-tab-labels label[for=\"aq-tab-250\"],\n  #aq-tab-500:checked ~ .aq-tab-labels label[for=\"aq-tab-500\"],\n  #aq-tab-1000:checked ~ .aq-tab-labels label[for=\"aq-tab-1000\"],\n  #aq-tab-5000:checked ~ .aq-tab-labels label[for=\"aq-tab-5000\"] { background: #006064; color: #fff; }\n  #aq-tab-250:checked ~ .aq-panels #aq-panel-250,\n  #aq-tab-500:checked ~ .aq-panels #aq-panel-500,\n  #aq-tab-1000:checked ~ .aq-panels #aq-panel-1000,\n  #aq-tab-5000:checked ~ .aq-panels #aq-panel-5000 { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Aragonite A\u003c\/strong\u003e is a concentrated liquid calcium supplement and the first part of Quantum's three part Aragonite reef dosing system. Calcium is one of the building blocks your corals, clams, and coralline algae pull from the water every day to grow new skeleton and shell. Aragonite A replaces it in a clean, reef safe form so your tank never runs short. Pair it with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-b-alkalinity\"\u003eAragonite B (Alkalinity)\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-c-magnesium\"\u003eAragonite C (Magnesium)\u003c\/a\u003e for complete, stable chemistry, and explore the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eCalcium never works alone.\u003c\/strong\u003e Calcium, alkalinity, and magnesium move together in a reef tank. Dose Aragonite A alongside \u003cstrong\u003eB and C\u003c\/strong\u003e and test regularly to keep all three locked in their target ranges. That balance is what keeps coral growth steady and color bright.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhy Calcium Matters\u003c\/h2\u003e\n  \u003cp\u003eStony corals (SPS and LPS), clams, snails, and coralline algae all build their structures from calcium carbonate. A growing reef can pull calcium down quickly, and when it drops, growth slows and tips can pale or recede. Aragonite A lets you hold calcium in the ideal \u003cstrong\u003e420 to 440 ppm\u003c\/strong\u003e range. Magnesium (Aragonite C) keeps that calcium and your alkalinity in solution, and alkalinity (Aragonite B) supplies the carbonate side of the equation, which is why the three are dosed as a set.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eConcentrated Calcium\u003c\/strong\u003e\u003cspan\u003eA strong, efficient calcium source that goes a long way per drop.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReef Safe Formula\u003c\/strong\u003e\u003cspan\u003eClean ingredients formulated specifically for marine and reef aquariums.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePart of a 3-Part System\u003c\/strong\u003e\u003cspan\u003eWorks hand in hand with Aragonite B (Alkalinity) and C (Magnesium).\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eBuilt for Calcifiers\u003c\/strong\u003e\u003cspan\u003eSupports SPS, LPS, clams, and coralline algae growth.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eMade in Australia\u003c\/strong\u003e\u003cspan\u003eProduced by Quantum to a consistent, lab tested standard.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eFour Sizes\u003c\/strong\u003e\u003cspan\u003eFrom a 250 ml nano bottle to a 5 L jug for large or multiple reefs.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for its full detail sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e250 ml\u003c\/th\u003e\n          \u003cth\u003e500 ml\u003c\/th\u003e\n          \u003cth\u003e1 L\u003c\/th\u003e\n          \u003cth\u003e5 L\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003ctd\u003e1000 ml\u003c\/td\u003e\n\u003ctd\u003e5000 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs\u003c\/td\u003e\n\u003ctd\u003eMid size reefs\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reefs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eValue per ml\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eGreat\u003c\/td\u003e\n\u003ctd\u003eBest\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAA250\u003c\/td\u003e\n\u003ctd\u003eAA500\u003c\/td\u003e\n\u003ctd\u003eAA1000\u003c\/td\u003e\n\u003ctd\u003eAA5000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$22.49\u003c\/td\u003e\n\u003ctd\u003e$30.49\u003c\/td\u003e\n\u003ctd\u003e$44.99\u003c\/td\u003e\n\u003ctd\u003e$139.99\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Size Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-250\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-500\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1000\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5000\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-250\" class=\"aq-tab-label\"\u003e250 ml · Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-500\" class=\"aq-tab-label\"\u003e500 ml · Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1000\" class=\"aq-tab-label\"\u003e1 L · Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5000\" class=\"aq-tab-label\"\u003e5 L · Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-250\"\u003e\n      \u003ch3\u003e250 ml · Nano \u0026amp; Pico Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe starter bottle. Ideal for nano and pico reefs, or for trying the Aragonite system before committing to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAA250\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eCalcium (Part A)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano and pico reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$22.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-500\"\u003e\n      \u003ch3\u003e500 ml · Small Reefs\u003c\/h3\u003e\n      \u003cp\u003eA practical everyday size for small reef systems with a light to moderate calcium demand.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAA500\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eCalcium (Part A)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eSmall reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$30.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1000\"\u003e\n      \u003ch3\u003e1 L · Mid Size Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe best balance of value and shelf life for most established reef tanks with steady coral growth.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1000 ml (1 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAA1000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eCalcium (Part A)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eMid size reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$44.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5000\"\u003e\n      \u003ch3\u003e5 L · Large or Multiple Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe bulk jug for large, heavily stocked SPS systems or hobbyists running several reef tanks. The lowest cost per ml.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5000 ml (5 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAA5000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eCalcium (Part A)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$139.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e — Nano and pico reefs, or a low commitment way to start the Aragonite system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e — Small reefs with a light to moderate calcium draw.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 L\u003c\/strong\u003e — The sweet spot for most mid size reefs. Best mix of value and freshness.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 L\u003c\/strong\u003e — Large SPS systems or multiple tanks where you want the lowest cost per ml.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Dose\u003c\/h2\u003e\n  \u003cp\u003eAlways test before you dose. Use a quality calcium test kit, then add Aragonite A to bring calcium into the \u003cstrong\u003e420 to 440 ppm\u003c\/strong\u003e range, raising it no more than about 50 ppm per day. Once you hit your target, dose a small daily amount to replace what your corals consume. Follow the dosing guide on the bottle and adjust to your own test results. Keep calcium, alkalinity, and magnesium in balance by dosing Aragonite A, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-b-alkalinity\"\u003eB\u003c\/a\u003e, and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-c-magnesium\"\u003eC\u003c\/a\u003e together, and pick up a reliable kit from our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ewater testing\u003c\/a\u003e collection.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I have to use all three Aragonite products?\u003c\/strong\u003e\u003cbr\u003eFor a thriving reef, yes. Calcium, alkalinity, and magnesium are consumed together and depend on each other. Dosing only calcium will eventually pull the other two out of range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat calcium level should I aim for?\u003c\/strong\u003e\u003cbr\u003eMost reef keepers target 420 to 440 ppm. Test, then dose Aragonite A to reach and hold that range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I use this in a fish only saltwater tank?\u003c\/strong\u003e\u003cbr\u003eYou can, but the main benefit is for reef tanks with corals, clams, and coralline algae that actively use calcium.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow is this different from Quantum Easy E Calcium?\u003c\/strong\u003e\u003cbr\u003eAragonite A is the single calcium component of the three part Aragonite system. \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-easy-e-calcium-reef-2-part-supplement\"\u003eEasy E Calcium\u003c\/a\u003e is part of a simpler two part approach. Both raise calcium; choose the system that fits how you like to dose.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48837684592859,"sku":"AA250","price":22.49,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48837684625627,"sku":"AA500","price":30.49,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48837684658395,"sku":"AA1000","price":44.99,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48837684691163,"sku":"AA5000","price":139.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Aragonite_A_250mL_Bottle.png?v=1780505869"},{"product_id":"quantum-aragonite-b-alkalinity","title":"Quantum Aragonite B - Alkalinity","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #003c3f; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #d0e8ea; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f5fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #f0fafb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #003c3f; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f7fcfd; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #006064; background: #fff; color: #006064; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #B2EBF2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-250:checked ~ .aq-tab-labels label[for=\"aq-tab-250\"],\n  #aq-tab-500:checked ~ .aq-tab-labels label[for=\"aq-tab-500\"],\n  #aq-tab-1000:checked ~ .aq-tab-labels label[for=\"aq-tab-1000\"],\n  #aq-tab-5000:checked ~ .aq-tab-labels label[for=\"aq-tab-5000\"] { background: #006064; color: #fff; }\n  #aq-tab-250:checked ~ .aq-panels #aq-panel-250,\n  #aq-tab-500:checked ~ .aq-panels #aq-panel-500,\n  #aq-tab-1000:checked ~ .aq-panels #aq-panel-1000,\n  #aq-tab-5000:checked ~ .aq-panels #aq-panel-5000 { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Aragonite B\u003c\/strong\u003e is a concentrated liquid alkalinity supplement and the second part of Quantum's three part Aragonite reef dosing system. Alkalinity, also called carbonate hardness or KH, is what buffers your reef against pH swings and supplies the carbonate that corals lock into their skeletons. It is usually the fastest element a reef consumes. Aragonite B replaces it cleanly so your buffer stays rock steady. Pair it with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-a-calcium\"\u003eAragonite A (Calcium)\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-c-magnesium\"\u003eAragonite C (Magnesium)\u003c\/a\u003e for complete chemistry, and browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eAlkalinity moves first.\u003c\/strong\u003e Of the big three, alkalinity is usually consumed fastest and swings hardest. Dose Aragonite B alongside \u003cstrong\u003eA and C\u003c\/strong\u003e, test often, and a stable buffer will reward you with steady growth and better color.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhy Alkalinity Matters\u003c\/h2\u003e\n  \u003cp\u003eAlkalinity is the carbonate side of coral growth and the buffer that holds your pH stable through the day and night cycle. When it drops, pH gets unstable and stony corals (SPS and LPS) can brown out or recede at the tips. Aragonite B lets you hold alkalinity in the ideal \u003cstrong\u003e8 to 9 dKH\u003c\/strong\u003e range. It works hand in hand with calcium (Aragonite A) and magnesium (Aragonite C), which is why all three are dosed together as a balanced set.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eConcentrated Alkalinity\u003c\/strong\u003e\u003cspan\u003eA strong carbonate buffer that goes a long way per dose.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReef Safe Formula\u003c\/strong\u003e\u003cspan\u003eClean ingredients formulated specifically for marine and reef tanks.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePart of a 3-Part System\u003c\/strong\u003e\u003cspan\u003eWorks hand in hand with Aragonite A (Calcium) and C (Magnesium).\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eStabilizes pH\u003c\/strong\u003e\u003cspan\u003eBuffers against the daily pH swings that stress corals.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eMade in Australia\u003c\/strong\u003e\u003cspan\u003eProduced by Quantum to a consistent, lab tested standard.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eFour Sizes\u003c\/strong\u003e\u003cspan\u003eFrom a 250 ml nano bottle to a 5 L jug for large or multiple reefs.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for its full detail sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e250 ml\u003c\/th\u003e\n          \u003cth\u003e500 ml\u003c\/th\u003e\n          \u003cth\u003e1 L\u003c\/th\u003e\n          \u003cth\u003e5 L\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003ctd\u003e1000 ml\u003c\/td\u003e\n\u003ctd\u003e5000 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs\u003c\/td\u003e\n\u003ctd\u003eMid size reefs\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reefs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eValue per ml\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eGreat\u003c\/td\u003e\n\u003ctd\u003eBest\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAB250\u003c\/td\u003e\n\u003ctd\u003eAB500\u003c\/td\u003e\n\u003ctd\u003eAB1000\u003c\/td\u003e\n\u003ctd\u003eAB5000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$22.49\u003c\/td\u003e\n\u003ctd\u003e$30.49\u003c\/td\u003e\n\u003ctd\u003e$44.99\u003c\/td\u003e\n\u003ctd\u003e$139.99\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Size Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-250\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-500\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1000\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5000\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-250\" class=\"aq-tab-label\"\u003e250 ml · Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-500\" class=\"aq-tab-label\"\u003e500 ml · Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1000\" class=\"aq-tab-label\"\u003e1 L · Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5000\" class=\"aq-tab-label\"\u003e5 L · Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-250\"\u003e\n      \u003ch3\u003e250 ml · Nano \u0026amp; Pico Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe starter bottle. Ideal for nano and pico reefs, or for trying the Aragonite system before stepping up to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAB250\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eAlkalinity (Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano and pico reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$22.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-500\"\u003e\n      \u003ch3\u003e500 ml · Small Reefs\u003c\/h3\u003e\n      \u003cp\u003eA practical everyday size for small reef systems with a light to moderate alkalinity demand.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAB500\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eAlkalinity (Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eSmall reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$30.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1000\"\u003e\n      \u003ch3\u003e1 L · Mid Size Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe best balance of value and shelf life for most established reef tanks with steady coral growth.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1000 ml (1 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAB1000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eAlkalinity (Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eMid size reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$44.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5000\"\u003e\n      \u003ch3\u003e5 L · Large or Multiple Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe bulk jug for large, heavily stocked SPS systems or hobbyists running several reef tanks. The lowest cost per ml.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5000 ml (5 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAB5000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eAlkalinity (Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$139.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e — Nano and pico reefs, or a low commitment way to start the Aragonite system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e — Small reefs with a light to moderate alkalinity draw.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 L\u003c\/strong\u003e — The sweet spot for most mid size reefs. Best mix of value and freshness.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 L\u003c\/strong\u003e — Large SPS systems or multiple tanks where you want the lowest cost per ml.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Dose\u003c\/h2\u003e\n  \u003cp\u003eAlways test before you dose. Use a quality alkalinity (KH) test kit, then add Aragonite B to bring alkalinity into the \u003cstrong\u003e8 to 9 dKH\u003c\/strong\u003e range, raising it no more than about 1.4 dKH per day. Once you reach your target, dose a small daily amount to replace what your corals consume. Follow the dosing guide on the bottle and adjust to your own test results. Keep calcium, alkalinity, and magnesium in balance by dosing \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-a-calcium\"\u003eAragonite A\u003c\/a\u003e, B, and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-c-magnesium\"\u003eC\u003c\/a\u003e together, and grab a reliable kit from our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ewater testing\u003c\/a\u003e collection.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWhy does alkalinity drop so fast?\u003c\/strong\u003e\u003cbr\u003eGrowing corals pull carbonate out of the water constantly, and alkalinity is usually the first of the big three to fall. That is why frequent testing and steady dosing matter most here.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat alkalinity level should I aim for?\u003c\/strong\u003e\u003cbr\u003eMost reef keepers hold 8 to 9 dKH. Test, then dose Aragonite B to reach and maintain that range. Avoid large swings.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need all three Aragonite products?\u003c\/strong\u003e\u003cbr\u003eYes. Calcium, alkalinity, and magnesium are consumed together and keep each other in balance. Dosing only one will pull the others out of range over time.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow is this different from Quantum Easy Z Alkalinity?\u003c\/strong\u003e\u003cbr\u003eAragonite B is the single alkalinity component of the three part Aragonite system. \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-easy-z-alkalinity-reef-2-part\"\u003eEasy Z Alkalinity\u003c\/a\u003e is part of a simpler two part approach. Both raise alkalinity; choose the system that fits how you like to dose.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48837700911323,"sku":"AB250","price":22.49,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48837700944091,"sku":"AB500","price":30.49,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48837700976859,"sku":"AB1000","price":44.99,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48837701009627,"sku":"AB5000","price":139.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_7e874fa4-0b06-4d54-9132-eb8b4226411d.jpg?v=1780498242"},{"product_id":"quantum-aragonite-c-magnesium","title":"Quantum Aragonite C - Magnesium","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #003c3f; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #d0e8ea; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f5fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #f0fafb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #003c3f; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f7fcfd; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #006064; background: #fff; color: #006064; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #B2EBF2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-250:checked ~ .aq-tab-labels label[for=\"aq-tab-250\"],\n  #aq-tab-500:checked ~ .aq-tab-labels label[for=\"aq-tab-500\"],\n  #aq-tab-1000:checked ~ .aq-tab-labels label[for=\"aq-tab-1000\"],\n  #aq-tab-5000:checked ~ .aq-tab-labels label[for=\"aq-tab-5000\"] { background: #006064; color: #fff; }\n  #aq-tab-250:checked ~ .aq-panels #aq-panel-250,\n  #aq-tab-500:checked ~ .aq-panels #aq-panel-500,\n  #aq-tab-1000:checked ~ .aq-panels #aq-panel-1000,\n  #aq-tab-5000:checked ~ .aq-panels #aq-panel-5000 { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Aragonite C\u003c\/strong\u003e is a concentrated liquid magnesium supplement and the third part of Quantum's three part Aragonite reef dosing system. Magnesium is the quiet workhorse of reef chemistry: it keeps calcium and alkalinity in solution so they stay available to your corals instead of precipitating out. Get magnesium right and dosing the other two becomes easy. Pair it with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-a-calcium\"\u003eAragonite A (Calcium)\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-b-alkalinity\"\u003eAragonite B (Alkalinity)\u003c\/a\u003e for complete, stable chemistry, and explore the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eMagnesium is the foundation.\u003c\/strong\u003e If magnesium is low, calcium and alkalinity will not hold no matter how much you dose. Set magnesium first with Aragonite C, then balance \u003cstrong\u003eA and B\u003c\/strong\u003e on top of it. Magnesium is consumed slowly, so it usually needs only occasional topping up.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhy Magnesium Matters\u003c\/h2\u003e\n  \u003cp\u003eMagnesium sits between calcium and carbonate in the water and stops them from binding together and falling out of solution. When magnesium runs low, you will see calcium and alkalinity drop together no matter how much you add. Aragonite C lets you hold magnesium in the ideal \u003cstrong\u003e1300 to 1350 ppm\u003c\/strong\u003e range, which is roughly three times your calcium level. With magnesium locked in, calcium (Aragonite A) and alkalinity (Aragonite B) stay stable and your corals get the steady chemistry they need.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eConcentrated Magnesium\u003c\/strong\u003e\u003cspan\u003eA strong magnesium source that goes a long way per dose.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReef Safe Formula\u003c\/strong\u003e\u003cspan\u003eClean ingredients formulated specifically for marine and reef tanks.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePart of a 3-Part System\u003c\/strong\u003e\u003cspan\u003eWorks hand in hand with Aragonite A (Calcium) and B (Alkalinity).\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eHolds Cal and Alk Stable\u003c\/strong\u003e\u003cspan\u003eKeeps calcium and alkalinity in solution and available to corals.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eMade in Australia\u003c\/strong\u003e\u003cspan\u003eProduced by Quantum to a consistent, lab tested standard.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eFour Sizes\u003c\/strong\u003e\u003cspan\u003eFrom a 250 ml nano bottle to a 5 L jug for large or multiple reefs.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for its full detail sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e250 ml\u003c\/th\u003e\n          \u003cth\u003e500 ml\u003c\/th\u003e\n          \u003cth\u003e1 L\u003c\/th\u003e\n          \u003cth\u003e5 L\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003ctd\u003e1000 ml\u003c\/td\u003e\n\u003ctd\u003e5000 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs\u003c\/td\u003e\n\u003ctd\u003eMid size reefs\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reefs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eValue per ml\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eGreat\u003c\/td\u003e\n\u003ctd\u003eBest\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAC250\u003c\/td\u003e\n\u003ctd\u003eAC500\u003c\/td\u003e\n\u003ctd\u003eAC1000\u003c\/td\u003e\n\u003ctd\u003eAC5000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$22.49\u003c\/td\u003e\n\u003ctd\u003e$30.49\u003c\/td\u003e\n\u003ctd\u003e$44.99\u003c\/td\u003e\n\u003ctd\u003e$139.99\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Size Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-250\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-500\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1000\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5000\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-250\" class=\"aq-tab-label\"\u003e250 ml · Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-500\" class=\"aq-tab-label\"\u003e500 ml · Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1000\" class=\"aq-tab-label\"\u003e1 L · Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5000\" class=\"aq-tab-label\"\u003e5 L · Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-250\"\u003e\n      \u003ch3\u003e250 ml · Nano \u0026amp; Pico Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe starter bottle. Ideal for nano and pico reefs, or for trying the Aragonite system before stepping up to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAC250\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eMagnesium (Part C)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano and pico reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$22.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-500\"\u003e\n      \u003ch3\u003e500 ml · Small Reefs\u003c\/h3\u003e\n      \u003cp\u003eA practical everyday size for small reef systems keeping magnesium topped up.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAC500\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eMagnesium (Part C)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eSmall reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$30.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1000\"\u003e\n      \u003ch3\u003e1 L · Mid Size Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe best balance of value and shelf life for most established reef tanks.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1000 ml (1 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAC1000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eMagnesium (Part C)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eMid size reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$44.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5000\"\u003e\n      \u003ch3\u003e5 L · Large or Multiple Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe bulk jug for large, heavily stocked SPS systems or hobbyists running several reef tanks. The lowest cost per ml.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5000 ml (5 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAC5000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eRole\u003c\/td\u003e\n\u003ctd\u003eMagnesium (Part C)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$139.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e — Nano and pico reefs, or a low commitment way to start the Aragonite system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e — Small reefs keeping magnesium in range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 L\u003c\/strong\u003e — The sweet spot for most mid size reefs. Best mix of value and freshness.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 L\u003c\/strong\u003e — Large SPS systems or multiple tanks where you want the lowest cost per ml.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Dose\u003c\/h2\u003e\n  \u003cp\u003eAlways test before you dose. Use a quality magnesium test kit, then add Aragonite C to bring magnesium into the \u003cstrong\u003e1300 to 1350 ppm\u003c\/strong\u003e range. Magnesium is used up slowly, so once you reach your target you usually only need to top it up occasionally rather than daily. Follow the dosing guide on the bottle and adjust to your own test results. Keep calcium, alkalinity, and magnesium in balance by dosing \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-a-calcium\"\u003eAragonite A\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-b-alkalinity\"\u003eB\u003c\/a\u003e, and C together, and pick up a reliable kit from our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ewater testing\u003c\/a\u003e collection.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWhy can I not keep my calcium and alkalinity up?\u003c\/strong\u003e\u003cbr\u003eLow magnesium is the usual culprit. When magnesium is below range, calcium and carbonate bind and precipitate, so they fall no matter how much you dose. Set magnesium with Aragonite C first.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat magnesium level should I aim for?\u003c\/strong\u003e\u003cbr\u003eMost reef keepers hold 1300 to 1350 ppm, roughly three times the calcium level. Test, then dose Aragonite C to reach that range.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow often do I dose magnesium?\u003c\/strong\u003e\u003cbr\u003eLess often than calcium or alkalinity. Magnesium is consumed slowly, so after you set it you usually just top up occasionally based on testing.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need all three Aragonite products?\u003c\/strong\u003e\u003cbr\u003eYes. Calcium, alkalinity, and magnesium work as a set. Magnesium is the foundation that lets \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-a-calcium\"\u003ecalcium\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-b-alkalinity\"\u003ealkalinity\u003c\/a\u003e stay where you want them.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48837726077147,"sku":"AC250","price":22.49,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48837726109915,"sku":"AC500","price":30.49,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48837726142683,"sku":"AC1000","price":44.99,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48837726175451,"sku":"AC5000","price":139.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_6015b13f-e905-4d93-afa1-55242fe6ab80.png?v=1780498409"},{"product_id":"quantum-bio-enhance","title":"Quantum Bio-Enhance","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #003c3f; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #d0e8ea; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f5fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #f0fafb; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #003c3f; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #e5e5e5; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f7fcfd; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-tab-radio { display: none; }\n  .aq-tab-labels { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.4em 0 0; }\n  .aq-tab-label { display: inline-block; padding: 10px 22px; border: 2px solid #006064; background: #fff; color: #006064; font-weight: 700; font-family: Arial, sans-serif; font-size: 0.9em; cursor: pointer; border-radius: 3px; letter-spacing: 0.04em; transition: background 0.15s, color 0.15s; user-select: none; }\n  .aq-tab-label:hover { background: #B2EBF2; }\n  .aq-tab-panel { display: none; }\n  #aq-tab-250:checked ~ .aq-tab-labels label[for=\"aq-tab-250\"],\n  #aq-tab-500:checked ~ .aq-tab-labels label[for=\"aq-tab-500\"],\n  #aq-tab-1000:checked ~ .aq-tab-labels label[for=\"aq-tab-1000\"],\n  #aq-tab-5000:checked ~ .aq-tab-labels label[for=\"aq-tab-5000\"] { background: #006064; color: #fff; }\n  #aq-tab-250:checked ~ .aq-panels #aq-panel-250,\n  #aq-tab-500:checked ~ .aq-panels #aq-panel-500,\n  #aq-tab-1000:checked ~ .aq-panels #aq-panel-1000,\n  #aq-tab-5000:checked ~ .aq-panels #aq-panel-5000 { display: block; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Bio-Enhance\u003c\/strong\u003e is an all-in-one coral nutrition supplement that combines five separate feeds into a single bottle. It delivers protein, amino acids, fatty acids, carbohydrates, and vitamins together to fuel tissue growth, color, and overall vitality in SPS, LPS, and mixed reef tanks. If you want a tried and true, well rounded way to feed your corals, Bio-Enhance does the job in one easy step. Pair it with our other Quantum coral foods like \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-coral-cane-complete-coral-food\"\u003eCoral Cane\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-pure-phyto-coral-phytoplankton\"\u003ePure Phyto\u003c\/a\u003e, and explore the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eFive feeds in one bottle.\u003c\/strong\u003e Bio-Enhance brings together \u003cstrong\u003eprotein, amino acids, fatty acids, carbohydrates, and vitamins\u003c\/strong\u003e so you stop juggling separate additives and give your corals complete nutrition in a single dose.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHow It Helps\u003c\/h2\u003e\n  \u003cp\u003eCorals do not live on light alone. They take in dissolved and particulate nutrients from the water to build tissue, deepen color, and recover from stress. Bio-Enhance supplies the full spread of those nutrients in one formula, which promotes faster tissue growth and stronger vitality across SPS, LPS, and soft corals. Because it is a balanced blend rather than a single ingredient, it is an easy, well rounded foundation for any reef feeding routine.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Is Inside\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eProtein\u003c\/strong\u003e\u003cspan\u003eBuilding blocks for new coral tissue and growth.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eAmino Acids\u003c\/strong\u003e\u003cspan\u003eSupport tissue repair, color, and polyp extension.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eFatty Acids\u003c\/strong\u003e\u003cspan\u003eEnergy and lipids that fuel healthy coral metabolism.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eCarbohydrates\u003c\/strong\u003e\u003cspan\u003eReadily usable energy to keep corals active.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eVitamins\u003c\/strong\u003e\u003cspan\u003eRound out the diet and support overall vitality.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eAll-in-One\u003c\/strong\u003e\u003cspan\u003eFive solutions combined, made and lab tested in Australia.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eSelect a size in the tab section below for its full detail sheet.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpec\u003c\/th\u003e\n          \u003cth\u003e250 ml\u003c\/th\u003e\n          \u003cth\u003e500 ml\u003c\/th\u003e\n          \u003cth\u003e1 L\u003c\/th\u003e\n          \u003cth\u003e5 L\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003ctd\u003e1000 ml\u003c\/td\u003e\n\u003ctd\u003e5000 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano \/ pico reefs\u003c\/td\u003e\n\u003ctd\u003eSmall reefs\u003c\/td\u003e\n\u003ctd\u003eMid size reefs\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reefs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eValue per ml\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eGreat\u003c\/td\u003e\n\u003ctd\u003eBest\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eBE250\u003c\/td\u003e\n\u003ctd\u003eBE500\u003c\/td\u003e\n\u003ctd\u003eBE1000\u003c\/td\u003e\n\u003ctd\u003eBE5000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$27.99\u003c\/td\u003e\n\u003ctd\u003e$36.99\u003c\/td\u003e\n\u003ctd\u003e$48.49\u003c\/td\u003e\n\u003ctd\u003e$179.99\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDetailed Size Specifications\u003c\/h2\u003e\n  \u003cp\u003eClick a size below to view its full sheet.\u003c\/p\u003e\n\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-250\" name=\"aq-spec-tab\" checked\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-500\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-1000\" name=\"aq-spec-tab\"\u003e\n  \u003cinput type=\"radio\" class=\"aq-tab-radio\" id=\"aq-tab-5000\" name=\"aq-spec-tab\"\u003e\n\n  \u003cdiv class=\"aq-tab-labels\"\u003e\n    \u003clabel for=\"aq-tab-250\" class=\"aq-tab-label\"\u003e250 ml · Nano\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-500\" class=\"aq-tab-label\"\u003e500 ml · Small\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-1000\" class=\"aq-tab-label\"\u003e1 L · Mid\u003c\/label\u003e\n    \u003clabel for=\"aq-tab-5000\" class=\"aq-tab-label\"\u003e5 L · Large\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"aq-panels\"\u003e\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-250\"\u003e\n      \u003ch3\u003e250 ml · Nano \u0026amp; Pico Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe starter bottle. Ideal for nano and pico reefs, or for trying Bio-Enhance before stepping up to a larger jug.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e250 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eBE250\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAll-in-one coral nutrition\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano and pico reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$27.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-500\"\u003e\n      \u003ch3\u003e500 ml · Small Reefs\u003c\/h3\u003e\n      \u003cp\u003eA practical everyday size for small reef systems with a regular coral feeding routine.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eBE500\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAll-in-one coral nutrition\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eSmall reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$36.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-1000\"\u003e\n      \u003ch3\u003e1 L · Mid Size Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe best balance of value and shelf life for most established reef tanks feeding corals regularly.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1000 ml (1 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eBE1000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAll-in-one coral nutrition\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eMid size reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$48.49\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"aq-tab-panel\" id=\"aq-panel-5000\"\u003e\n      \u003ch3\u003e5 L · Large or Multiple Reefs\u003c\/h3\u003e\n      \u003cp\u003eThe bulk jug for large, heavily stocked SPS systems or hobbyists running several reef tanks. The lowest cost per ml.\u003c\/p\u003e\n      \u003ctable class=\"aq-specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5000 ml (5 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eBE5000\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAll-in-one coral nutrition\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eLarge or multiple reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$179.99\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich Size Is Right for You?\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003e250 ml\u003c\/strong\u003e — Nano and pico reefs, or a low commitment way to try Bio-Enhance.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e500 ml\u003c\/strong\u003e — Small reefs feeding corals a few times a week.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e1 L\u003c\/strong\u003e — The sweet spot for most mid size reefs. Best mix of value and freshness.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003e5 L\u003c\/strong\u003e — Large SPS systems or multiple tanks where you want the lowest cost per ml.\u003c\/p\u003e\n\n  \u003ch2\u003eHow to Use\u003c\/h2\u003e\n  \u003cp\u003eShake well before use. Dose by tank volume a few times per week, ideally after lights out when coral polyps are extended and feeding. Start conservatively and increase gradually based on how your corals respond, your bioload, and your skimming. Follow the dosing guide on the bottle and keep up regular water changes and protein skimming to handle the added nutrients. For the best results, build on a stable chemistry foundation with the Quantum \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-a-calcium\"\u003eAragonite\u003c\/a\u003e calcium, alkalinity, and magnesium system, and feed alongside \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-pure-phyto-coral-phytoplankton\"\u003ePure Phyto\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat does Bio-Enhance actually do?\u003c\/strong\u003e\u003cbr\u003eIt feeds your corals. It supplies protein, amino acids, fatty acids, carbohydrates, and vitamins in one balanced formula to support tissue growth, color, and vitality in reef tanks.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhich corals is it for?\u003c\/strong\u003e\u003cbr\u003eSPS, LPS, and mixed reef aquariums. The blended nutrition suits a wide range of corals in one product.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWill it cloud my water or raise nutrients too much?\u003c\/strong\u003e\u003cbr\u003eDose conservatively and increase slowly. Any coral food adds to your tank's nutrient load, so pair regular dosing with good skimming and water changes.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I use it with other Quantum products?\u003c\/strong\u003e\u003cbr\u003eYes. Bio-Enhance feeds corals, while the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-aragonite-b-alkalinity\"\u003eAragonite\u003c\/a\u003e A, B, and C system maintains calcium, alkalinity, and magnesium. They complement each other.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48837762941147,"sku":"BE250","price":27.99,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48837762973915,"sku":"BE500","price":36.99,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48837763006683,"sku":"BE1000","price":48.49,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48837763039451,"sku":"BE5000","price":179.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_69885fe9-9a30-4985-9894-f3368ea3e8da.png?v=1780498936"},{"product_id":"quantum-bio-metals-green-coral-color-enhancer","title":"Quantum Bio-Metals","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #006064; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f4fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #E0F7FA; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #006064; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f4fbfc; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n  .aq-pd ul { margin: 0.5em 0 1em; padding-left: 1.2em; }\n  .aq-pd li { margin: 0.3em 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Bio-Metals\u003c\/strong\u003e is a bioactive color enhancer built to wake up the greens and yellows in your reef. It delivers iron and manganese in ionic, complexed, and chelated forms, so the metals stay bioavailable to your corals over the full dosing cycle instead of crashing out of solution. If your green montis, hammers, or torches look washed out, this is the trace-metal boost that brings the pigment back. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eStep 4 of the Quantum Bioactive Color system.\u003c\/strong\u003e Targets green and yellow coral pigmentation with bioavailable iron and manganese. Dose into high flow, run it daily, and keep iron in the 0.1 to 0.3 ppm sweet spot.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHow It Works\u003c\/h2\u003e\n  \u003cp\u003eIron and manganese sit at the center of the biochemical pathways corals use to build green and yellow pigments. In most closed reef systems these metals get consumed faster than water changes replace them, and free iron oxidizes out of solution quickly. Bio-Metals supplies iron and manganese in three forms at once: ionic for immediate uptake, plus complexed and chelated for a slow, steady release. That gives coral tissue a consistent supply to drive vivid green coloration instead of a spike-and-crash cycle.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTargets Green and Yellow\u003c\/strong\u003e\u003cspan\u003eFormulated to intensify the green and yellow pigments in LPS, SPS, and soft corals.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTriple-Form Metals\u003c\/strong\u003e\u003cspan\u003eIonic, complexed, and chelated metals for immediate plus sustained availability.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eIron and Manganese\u003c\/strong\u003e\u003cspan\u003eThe two trace metals most closely tied to green and yellow coral coloration.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eDosing-Pump Ready\u003c\/strong\u003e\u003cspan\u003eStable liquid that runs cleanly through any auto-doser for hands-off daily dosing.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eStocking-Based Dosing\u003c\/strong\u003e\u003cspan\u003eClear daily rates for lightly, moderately, and heavily stocked reefs.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePart of a System\u003c\/strong\u003e\u003cspan\u003eDesigned to run with Quantum Bio-Enhance, Bio-Gen, and Bio-Kalium.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDosing\u003c\/h2\u003e\n  \u003cp\u003eAdd Bio-Metals into an area of high water flow. Dose daily based on how heavily your reef is stocked, then fine-tune to keep iron between 0.1 and 0.3 ppm. As a reference, 1 mL per 100 L (26 gal) raises iron by roughly 0.01 ppm. If the bottle has settled, invert it gently 3 to 4 times before dosing.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eStocking Level\u003c\/th\u003e\n\u003cth\u003eDaily Dose\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eLightly stocked\u003c\/td\u003e\n\u003ctd\u003e0.50 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eModerately stocked\u003c\/td\u003e\n\u003ctd\u003e0.75 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHeavily stocked\u003c\/td\u003e\n\u003ctd\u003e1.00 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eMaintain iron 0.1 to 0.3 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003eTest iron regularly. Excess iron can feed nuisance algae, so dose to your test results rather than overshooting.\u003c\/p\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eAll four sizes are the same formula. Pick based on system volume and how you dose.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eApprox. Duration*\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e~4 months\u003c\/td\u003e\n\u003ctd\u003eNano and small reefs, or a first trial\u003c\/td\u003e\n\u003ctd\u003eBM250\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e~8 months\u003c\/td\u003e\n\u003ctd\u003eStandard reef tanks, most popular size\u003c\/td\u003e\n\u003ctd\u003eBM500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1000 mL (1 L)\u003c\/td\u003e\n\u003ctd\u003e~15 months\u003c\/td\u003e\n\u003ctd\u003eLarge or heavily stocked reefs\u003c\/td\u003e\n\u003ctd\u003eBM1000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e5000 mL (5 L)\u003c\/td\u003e\n\u003ctd\u003eYears\u003c\/td\u003e\n\u003ctd\u003eBig systems, frag farms, and auto-doser refills, best value\u003c\/td\u003e\n\u003ctd\u003eBM5000\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003e*Approximate, based on 0.75 mL per 100 L per day on a 75-gallon reef. Your actual usage scales with tank volume and stocking.\u003c\/p\u003e\n\n  \u003ch2\u003eThe Quantum Bioactive Color System\u003c\/h2\u003e\n  \u003cp\u003eBio-Metals is Step 4 in the Quantum saltwater color program. For the full coloring effect it is designed to run alongside Quantum Bio-Enhance, Bio-Gen, and Bio-Kalium, which together supply the biomolecules and the major, minor, and trace coloring elements corals need. Bio-Metals covers the greens and yellows. Quantum offers companion bottles that push reds and pinks and others that intensify whites, blues, and violets, so you can dial in the exact palette you are after.\u003c\/p\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable class=\"aq-specs-table\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eQuantum Bio-Metals (Bioactive Color Enhancer)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eQuantum USA\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSystem Step\u003c\/td\u003e\n\u003ctd\u003eStep 4, Bioactive Color Intensifiers\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eColor Target\u003c\/td\u003e\n\u003ctd\u003eGreen and yellow coral pigments\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eKey Elements\u003c\/td\u003e\n\u003ctd\u003eIron and manganese (ionic, complexed, chelated)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUse In\u003c\/td\u003e\n\u003ctd\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDaily Dose\u003c\/td\u003e\n\u003ctd\u003e0.50 to 1.00 mL per 100 L by stocking\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIron Target\u003c\/td\u003e\n\u003ctd\u003e0.1 to 0.3 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDosing Pump\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e250 mL, 500 mL, 1000 mL, 5000 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-trace-colors-a-b-c-d-pack\"\u003eRed Sea Trace Colors A\/B\/C\/D Pack\u003c\/a\u003e: a complementary coral-color trace element program\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-coral-max-coralmax-coral-food\"\u003eFritz Coral Max\u003c\/a\u003e: feed your corals to support color and growth\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eReef additives and supplements\u003c\/a\u003e: calcium, alkalinity, and trace element dosing\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/corals\"\u003eLive corals\u003c\/a\u003e: find new green and yellow pieces to color up\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWill Bio-Metals turn my corals green?\u003c\/strong\u003e\u003cbr\u003eIt intensifies the green and yellow pigments corals already have by supplying the iron and manganese those pigments depend on. It will not add color a coral is not genetically capable of, but it brings faded greens and yellows back to life.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I have to buy the other Quantum bottles too?\u003c\/strong\u003e\u003cbr\u003eFor the best result, yes. Bio-Metals is Step 4 of a system designed to run with Bio-Enhance, Bio-Gen, and Bio-Kalium. It still helps on its own, but the full lineup delivers the complete coloring effect.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I run it on an auto-doser?\u003c\/strong\u003e\u003cbr\u003eYes. It is a stable liquid made for daily dosing and runs cleanly through any dosing pump. Add it to a high-flow area of the tank.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCould it cause algae?\u003c\/strong\u003e\u003cbr\u003eIron can feed nuisance algae if you overdose it. Test your iron and dose to keep it in the 0.1 to 0.3 ppm range rather than pouring in extra.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48838056444123,"sku":"BM250","price":27.99,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48838056476891,"sku":"BM500","price":36.99,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48838056509659,"sku":"BM1000","price":48.49,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48838056542427,"sku":"BM5000","price":179.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Bio_Metals_500mL_Bottle.png?v=1780505273"},{"product_id":"quantum-easy-z-alkalinity-reef-2-part","title":"Quantum Easy Z Alkalinity","description":"\u003cstyle\u003e\n.aq-pd{font-family:Georgia,serif;color:#1a1a1a;max-width:860px;margin:0 auto;line-height:1.7;}\n.aq-pd h2{font-size:1.45em;font-weight:700;letter-spacing:-0.01em;border-left:4px solid #006064;padding-left:12px;margin:2em 0 0.6em;}\n.aq-pd p{margin:0.5em 0 1em;}\n.aq-pd ul{margin:0.5em 0 1.2em 1.2em;}\n.aq-pd li{margin:0.3em 0;}\n.aq-callout{background:#006064;color:#fff;border-radius:4px;padding:16px 20px;margin:1.6em 0;font-family:Arial,sans-serif;font-size:0.93em;line-height:1.6;}\n.aq-callout strong{color:#A7FFEB;}\n.aq-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:1em 0 1.6em;}\n.aq-feature-card{background:#E0F7FA;border-radius:4px;padding:14px 16px;border-left:3px solid #006064;font-family:Arial,sans-serif;font-size:0.9em;}\n.aq-feature-card strong{display:block;margin-bottom:3px;color:#1a1a1a;}\n.aq-feature-card span{color:#555;}\n.aq-compare{overflow-x:auto;margin:1em 0 1.6em;}\n.aq-compare table{width:100%;border-collapse:collapse;font-family:Arial,sans-serif;font-size:0.88em;min-width:520px;}\n.aq-compare th{background:#006064;color:#fff;padding:9px 14px;text-align:center;font-weight:700;letter-spacing:0.05em;text-transform:uppercase;}\n.aq-compare th:first-child{background:#003c3f;text-align:left;}\n.aq-compare td{padding:8px 14px;border-bottom:1px solid #B2EBF2;text-align:center;}\n.aq-compare td:first-child{text-align:left;font-weight:600;color:#444;background:#E0F7FA;}\n.aq-compare tr:nth-child(even) td:not(:first-child){background:#E0F7FA;}\n.aq-specs-table{width:100%;border-collapse:collapse;margin-top:1em;font-family:Arial,sans-serif;font-size:0.93em;}\n.aq-specs-table th{background:#006064;color:#fff;text-align:left;padding:9px 14px;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;font-size:0.82em;}\n.aq-specs-table td{padding:8px 14px;border-bottom:1px solid #B2EBF2;vertical-align:top;}\n.aq-specs-table tr:nth-child(even) td{background:#f2fbfc;}\n.aq-specs-table td:first-child{font-weight:600;width:45%;color:#444;}\n\u003c\/style\u003e\n\u003cdiv class=\"aq-pd\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuantum Easy Z Alkalinity\u003c\/strong\u003e is the alkalinity half of the Easy Reefer 2-part system. It replenishes the carbonates your corals consume as they grow, holding your reef in a stable, healthy alkalinity range while topping up the supporting elements a thriving system needs. Run it alongside \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-easy-e-calcium-reef-2-part-supplement\"\u003eEasy E Calcium\u003c\/a\u003e and browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"aq-callout\"\u003e\n\u003cstrong\u003eHalf of the Easy Reefer 2-part.\u003c\/strong\u003e Dose Easy Z for alkalinity and pair it with Easy E for calcium to keep skeletal growth balanced and your parameters rock steady.\u003c\/div\u003e\n\u003ch2\u003eWhy Alkalinity Matters\u003c\/h2\u003e\n\u003cp\u003eAlkalinity, also called carbonate hardness, is one half of the equation that builds coral skeletons. As your corals grow they pull carbonates straight out of the water, and if you do not replace them your alkalinity drifts and growth stalls. Easy Z restores those carbonates daily and carries supporting potassium, iodine, bromine, fluorine, and boron so your whole system stays in balance.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cdiv class=\"aq-features\"\u003e\n\u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eStable alkalinity\u003c\/strong\u003e\u003cspan\u003eHolds your reef in the target 7.4 to 10.5 dKH range.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eBalanced 2-part\u003c\/strong\u003e\u003cspan\u003eDesigned to dose alongside Easy E Calcium for even growth.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eSupporting elements\u003c\/strong\u003e\u003cspan\u003eMaintains potassium, iodine, bromine, fluorine, and boron.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePredictable dosing\u003c\/strong\u003e\u003cspan\u003e1 mL per 100 L raises alkalinity by about 0.09 dKH.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eDaily top-up\u003c\/strong\u003e\u003cspan\u003eSimple daily dosing keeps parameters steady between water changes.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eAustralian made\u003c\/strong\u003e\u003cspan\u003ePart of the Quantum Reef Essential range.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHow to Dose\u003c\/h2\u003e\n\u003cp\u003eAdd Easy Z to a high-flow area of your sump. Dose daily based on your stocking level, and adjust to keep your alkalinity in range using a reliable test kit. As a guide, 1 mL per 100 L (26 gal) raises alkalinity by roughly 0.09 dKH.\u003c\/p\u003e\n\u003cdiv class=\"aq-compare\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eStocking Level\u003c\/th\u003e\n\u003cth\u003eDaily Dose\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLightly stocked\u003c\/td\u003e\n\u003ctd\u003e0.50 mL \/ 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModerately stocked\u003c\/td\u003e\n\u003ctd\u003e0.75 mL \/ 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavily stocked\u003c\/td\u003e\n\u003ctd\u003e1.00 mL \/ 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n\u003cdiv class=\"aq-compare\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003eEZ500\u003c\/td\u003e\n\u003ctd\u003e$27.99\u003c\/td\u003e\n\u003ctd\u003eNano \u0026amp; small reef tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 mL (1 L)\u003c\/td\u003e\n\u003ctd\u003eEZ1000\u003c\/td\u003e\n\u003ctd\u003e$39.99\u003c\/td\u003e\n\u003ctd\u003eStandard reef systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5000 mL (5 L)\u003c\/td\u003e\n\u003ctd\u003eEZ5000\u003c\/td\u003e\n\u003ctd\u003e$128.99\u003c\/td\u003e\n\u003ctd\u003eLarge or heavily stocked reefs, best value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eThe Easy Reefer 2-Part System\u003c\/h2\u003e\n\u003cp\u003eEasy Z is one half of a balanced two-part dosing routine:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-easy-e-calcium-reef-2-part-supplement\"\u003eEasy E Calcium\u003c\/a\u003e supplies the calcium half of the equation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Z Alkalinity\u003c\/strong\u003e supplies the carbonate half plus supporting elements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDose both daily in equal measure for steady, balanced coral growth. Add targeted color with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-gen-blue-white-violet-coral-color\"\u003eBio-Gen\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-metals-green-coral-color-enhancer\"\u003eBio-Metals\u003c\/a\u003e, and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-kalium-red-pink-coral-color\"\u003eBio-Kalium\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"aq-specs-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eReef alkalinity supplement (Easy Reefer 2-part)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eQuantum Reef Essential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePairs with\u003c\/td\u003e\n\u003ctd\u003eQuantum Easy E Calcium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget alkalinity\u003c\/td\u003e\n\u003ctd\u003e7.4 to 10.5 dKH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupporting elements\u003c\/td\u003e\n\u003ctd\u003ePotassium, iodine, bromine, fluorine, boron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDose\u003c\/td\u003e\n\u003ctd\u003e0.5 to 1.0 mL per 100 L (26 gal) daily, by stocking level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSizes\u003c\/td\u003e\n\u003ctd\u003e500 mL, 1000 mL (1 L), 5000 mL (5 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eSaltwater \/ reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of origin\u003c\/td\u003e\n\u003ctd\u003eAustralia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-easy-e-calcium-reef-2-part-supplement\"\u003eQuantum Easy E Calcium\u003c\/a\u003e to complete the 2-part.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-coral-cane-complete-coral-food\"\u003eCoral Cane\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-pure-phyto-coral-phytoplankton\"\u003ePure Phyto\u003c\/a\u003e to feed growing corals.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003eAlkalinity test kits\u003c\/a\u003e to dial in your dose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDo I have to use Easy E Calcium with it?\u003c\/strong\u003e\u003cbr\u003eFor balanced growth, yes. Alkalinity and calcium are consumed together, so dosing Easy Z alongside Easy E keeps both parameters stable. You can run Easy Z on its own to correct low alkalinity, but a full 2-part routine gives the best long-term results.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much will it raise my alkalinity?\u003c\/strong\u003e\u003cbr\u003eAbout 0.09 dKH per 1 mL in 100 L (26 gal). Always confirm with a test kit and adjust your daily dose to hold your target range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere should I add it?\u003c\/strong\u003e\u003cbr\u003eDose into a high-flow area of your sump so it mixes quickly. Avoid dosing Easy Z and Easy E into the exact same spot at the same moment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I test?\u003c\/strong\u003e\u003cbr\u003eTest alkalinity a few times a week while you dial in your dose, then weekly once your levels are stable.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"500 ml","offer_id":48838062604507,"sku":"EZ500","price":27.99,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48838062637275,"sku":"EZ1000","price":39.99,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48838062670043,"sku":"EZ5000","price":128.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Easy_Z_500mL_Bottle.png?v=1780505545"},{"product_id":"quantum-easy-e-calcium-reef-2-part-supplement","title":"Quantum Easy E Calcium","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #006064; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f4fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #E0F7FA; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #006064; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f4fbfc; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n  .aq-pd ul { margin: 0.5em 0 1em; padding-left: 1.2em; }\n  .aq-pd li { margin: 0.3em 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Easy E\u003c\/strong\u003e is the calcium half of the Quantum Easy Reefer two-part dosing system. It delivers ionic and complexed calcium along with magnesium, strontium, barium, iron, manganese, and other trace metals, the building blocks corals use to grow strong aragonite skeletons and hold their color. Paired with Easy Z, it gives a reef the full range of major, minor, and trace elements without the fuss of a six-bottle dosing routine. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eThe calcium half of the Quantum Easy Reefer 2-part system.\u003c\/strong\u003e Ionic and complexed calcium plus magnesium, strontium, and trace metals. Run it alongside Easy Z and dose to keep calcium in the 405 to 440 ppm range.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhy Calcium Matters\u003c\/h2\u003e\n  \u003cp\u003eStony corals, clams, and coralline algae build their skeletons from aragonite, which is calcium carbonate. As your reef grows it pulls calcium out of the water continuously, and a tank that runs low on calcium slows down and loses color. Easy E replaces that calcium in ionic and complexed forms for fast and sustained availability, and it carries a suite of trace elements along with it. The result is steady growth and better coloration when dosed consistently and balanced against alkalinity.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eIonic and Complexed Calcium\u003c\/strong\u003e\u003cspan\u003eConcentrated calcium at 110,000 ppm for fast plus sustained uptake.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eFull Trace Suite\u003c\/strong\u003e\u003cspan\u003eMagnesium, strontium, barium, iron, manganese, vanadium, and molybdenum.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eBuilds Aragonite\u003c\/strong\u003e\u003cspan\u003eSupplies the calcium corals use to grow strong skeletons.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eSupports Color\u003c\/strong\u003e\u003cspan\u003eThe trace metals carried with the calcium help corals hold their color.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTwo-Part Simplicity\u003c\/strong\u003e\u003cspan\u003eEasy E plus Easy Z covers your dosing without a six-bottle routine.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eDosing-Pump Ready\u003c\/strong\u003e\u003cspan\u003eStable liquid that runs cleanly through any auto-doser.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDosing\u003c\/h2\u003e\n  \u003cp\u003eAdd Easy E into an area of high water flow, ideally on the opposite side of the tank from where you dose Easy Z. Calcium demand depends on how much stony coral you keep, so dose to maintain calcium between 405 and 440 ppm and adjust to your test results. As a reference, 1 mL per 100 L (26 gal) raises calcium by roughly 1.1 ppm. Keep calcium and alkalinity in balance for stable, healthy growth.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eTarget Range\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eCalcium\u003c\/td\u003e\n\u003ctd\u003e405 to 440 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMagnesium\u003c\/td\u003e\n\u003ctd\u003e1230 to 1310 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eStrontium\u003c\/td\u003e\n\u003ctd\u003e6 to 10 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eIron\u003c\/td\u003e\n\u003ctd\u003e0.002 to 0.004 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003eStarting rates by stocking: lightly stocked 0.50 mL, moderately stocked 0.75 mL, heavily stocked 1.00 mL per 100 L per day. Then dose to your calcium test, since demand rises with stony coral load.\u003c\/p\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eAll three sizes are the same formula. Pick based on system volume and how much stony coral you keep.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003eNano and small reefs, or trying the system\u003c\/td\u003e\n\u003ctd\u003eEE500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1000 mL (1 L)\u003c\/td\u003e\n\u003ctd\u003eStandard reef tanks, most popular size\u003c\/td\u003e\n\u003ctd\u003eEE1000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e5000 mL (5 L)\u003c\/td\u003e\n\u003ctd\u003eLarge or SPS-heavy reefs and auto-doser refills, best value\u003c\/td\u003e\n\u003ctd\u003eEE5000\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eThe Easy Reefer 2-Part System\u003c\/h2\u003e\n  \u003cp\u003eEasy E is one half of a balanced two-part program. Easy E carries calcium and the trace metals; Easy Z carries the complementary elements. Dosed together in equal parts, they keep your major, minor, and trace elements topped up, which is simpler to run and easier to keep balanced than a shelf full of individual additives. Pair Easy E with Easy Z for the complete system.\u003c\/p\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable class=\"aq-specs-table\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eQuantum Easy Reefer Easy E (Calcium)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eQuantum USA\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSystem\u003c\/td\u003e\n\u003ctd\u003eEasy Reefer 2-part (pairs with Easy Z)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCalcium Content\u003c\/td\u003e\n\u003ctd\u003e110,000 ppm in solution\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAlso Supplies\u003c\/td\u003e\n\u003ctd\u003eMg, Sr, Ba, Fe, Mn, V, Mo, trace elements\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUse In\u003c\/td\u003e\n\u003ctd\u003eSaltwater reef aquariums (LPS, mixed, SPS, NPS)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCalcium Target\u003c\/td\u003e\n\u003ctd\u003e405 to 440 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDosing Pump\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e500 mL, 1000 mL, 5000 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-a-calcium-powder-1kg\"\u003eRed Sea Foundation A Calcium\u003c\/a\u003e: an alternative calcium source if you prefer a powder\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-rpm-liquid-pt-2-calcium-reef-supplement\"\u003eFritz RPM Liquid Part 2 Calcium\u003c\/a\u003e: another 2-part calcium option\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eReef additives and supplements\u003c\/a\u003e: alkalinity, magnesium, and trace dosing to balance your calcium\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/corals\"\u003eLive corals\u003c\/a\u003e: stock the stony corals your calcium is feeding\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need Easy Z too?\u003c\/strong\u003e\u003cbr\u003eFor a balanced system, yes. Easy E supplies calcium and trace metals, and Easy Z supplies the complementary elements. Dosed together they keep your reef chemistry in balance.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow much should I dose?\u003c\/strong\u003e\u003cbr\u003eStart with the stocking-based rate, then dose to maintain calcium between 405 and 440 ppm. Stony-coral-heavy tanks consume calcium faster and will need more. Always test and keep calcium balanced with alkalinity.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhy dose Easy E and Easy Z on opposite sides of the tank?\u003c\/strong\u003e\u003cbr\u003eKeeping the two parts separated in high flow lets each disperse before they meet, which avoids any local precipitation and keeps dosing efficient.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I run it on an auto-doser?\u003c\/strong\u003e\u003cbr\u003eYes. It is a stable liquid made for daily dosing and runs cleanly through any dosing pump.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"500 ml","offer_id":48838082789595,"sku":"EE500","price":27.99,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48838082822363,"sku":"EE1000","price":39.99,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48838082855131,"sku":"EE5000","price":128.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Easy_E_500mL_Bottle.png?v=1780506718"},{"product_id":"quantum-bio-kalium-red-pink-coral-color","title":"Quantum Bio-Kalium","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #006064; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f4fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #E0F7FA; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #006064; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f4fbfc; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n  .aq-pd ul { margin: 0.5em 0 1em; padding-left: 1.2em; }\n  .aq-pd li { margin: 0.3em 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Bio-Kalium\u003c\/strong\u003e is a bioactive color enhancer built to deepen the reds and pinks in your reef. It supplies complexed potassium and boron, two elements corals lean on for warm-toned pigments and healthy skeletal growth. Potassium works as a nutrient transporter that helps move color-building compounds through coral tissue, while boron supports the aragonite corals use to build their skeletons. If your red planet, pink birdsnest, or rainbow acros have lost their warmth, this is the potassium boost that brings them back. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eStep 4 of the Quantum Bioactive Color system.\u003c\/strong\u003e Intensifies red and pink coral pigmentation with complexed potassium and boron. Dose into high flow, run it daily, and keep potassium in the 375 to 400 ppm range.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHow It Works\u003c\/h2\u003e\n  \u003cp\u003eRed and pink coral pigments respond strongly to potassium. Potassium acts as a nutrient transporter inside coral tissue, helping shuttle the building blocks of warm-toned chromoproteins where they are needed. Boron rounds out the formula by supporting aragonite production, the calcium carbonate skeleton corals grow on. Both elements are drawn down steadily in a busy reef, so Bio-Kalium keeps them topped up between water changes and lets your reds and pinks hold their intensity.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTargets Red and Pink\u003c\/strong\u003e\u003cspan\u003eFormulated to intensify the warm-toned pigments in LPS, SPS, and soft corals.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eComplexed Potassium\u003c\/strong\u003e\u003cspan\u003eA stable, bioavailable potassium source the corals can readily use.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eNutrient Transporter\u003c\/strong\u003e\u003cspan\u003ePotassium helps move color-building compounds through coral tissue.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eBoron for Skeleton\u003c\/strong\u003e\u003cspan\u003eSupports aragonite production for strong, steady skeletal growth.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eDosing-Pump Ready\u003c\/strong\u003e\u003cspan\u003eStable liquid that runs cleanly through any auto-doser for daily dosing.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003ePart of a System\u003c\/strong\u003e\u003cspan\u003eDesigned to run with Quantum Bio-Enhance, Bio-Gen, and Bio-Metals.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDosing\u003c\/h2\u003e\n  \u003cp\u003eAdd Bio-Kalium into an area of high water flow. Dose daily based on how heavily your reef is stocked, then fine-tune to keep potassium between 375 and 400 ppm and boron between 4 and 5 ppm. As a reference, 1 mL per 100 L (26 gal) raises potassium by roughly 1 ppm, with boron rising proportionally. Test potassium regularly and dose to your results.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eStocking Level\u003c\/th\u003e\n\u003cth\u003eDaily Dose\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eLightly stocked\u003c\/td\u003e\n\u003ctd\u003e0.50 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eModerately stocked\u003c\/td\u003e\n\u003ctd\u003e0.75 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHeavily stocked\u003c\/td\u003e\n\u003ctd\u003e1.00 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003ePotassium 375 to 400 ppm, boron 4 to 5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003eKeep potassium stable. Big swings stress corals, so dose to test results rather than chasing a number.\u003c\/p\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eAll four sizes are the same formula. Pick based on system volume and how you dose.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eApprox. Duration*\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e~4 months\u003c\/td\u003e\n\u003ctd\u003eNano and small reefs, or a first trial\u003c\/td\u003e\n\u003ctd\u003eBK250\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e~8 months\u003c\/td\u003e\n\u003ctd\u003eStandard reef tanks, most popular size\u003c\/td\u003e\n\u003ctd\u003eBK500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1000 mL (1 L)\u003c\/td\u003e\n\u003ctd\u003e~15 months\u003c\/td\u003e\n\u003ctd\u003eLarge or heavily stocked reefs\u003c\/td\u003e\n\u003ctd\u003eBK1000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e5000 mL (5 L)\u003c\/td\u003e\n\u003ctd\u003eYears\u003c\/td\u003e\n\u003ctd\u003eBig systems, frag farms, and auto-doser refills, best value\u003c\/td\u003e\n\u003ctd\u003eBK5000\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003e*Approximate, based on 0.75 mL per 100 L per day on a 75-gallon reef. Your actual usage scales with tank volume and stocking.\u003c\/p\u003e\n\n  \u003ch2\u003eThe Quantum Bioactive Color System\u003c\/h2\u003e\n  \u003cp\u003eBio-Kalium is one of the Step 4 Bioactive Color Elements. Each bottle in the line drives a different part of the spectrum, and they are designed to run together for the full effect:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-kalium-red-pink-coral-color\"\u003eBio-Kalium\u003c\/a\u003e (this product): reds and pinks, via potassium and boron\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-gen-blue-white-violet-coral-color\"\u003eBio-Gen\u003c\/a\u003e: whites, blues, and violets, via halogens\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-metals-green-coral-color-enhancer\"\u003eBio-Metals\u003c\/a\u003e: greens and yellows, via iron and manganese\u003c\/li\u003e\n    \u003cli\u003eBio-Enhance: the biomolecule base that ties the system together\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eRun them as a set to supply the full range of biomolecules and major, minor, and trace coloring elements your corals need.\u003c\/p\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable class=\"aq-specs-table\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eQuantum Bio-Kalium (Bioactive Color Enhancer)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eQuantum USA\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSystem Step\u003c\/td\u003e\n\u003ctd\u003eStep 4, Bioactive Color Elements\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eColor Target\u003c\/td\u003e\n\u003ctd\u003eRed and pink coral pigments\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eKey Elements\u003c\/td\u003e\n\u003ctd\u003eComplexed potassium and boron\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUse In\u003c\/td\u003e\n\u003ctd\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDaily Dose\u003c\/td\u003e\n\u003ctd\u003e0.50 to 1.00 mL per 100 L by stocking\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTargets\u003c\/td\u003e\n\u003ctd\u003ePotassium 375 to 400 ppm, boron 4 to 5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDosing Pump\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e250 mL, 500 mL, 1000 mL, 5000 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-metals-green-coral-color-enhancer\"\u003eQuantum Bio-Metals\u003c\/a\u003e: the green and yellow color enhancer from the same system\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-gen-blue-white-violet-coral-color\"\u003eQuantum Bio-Gen\u003c\/a\u003e: the white, blue, and violet color enhancer from the same system\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eReef additives and supplements\u003c\/a\u003e: calcium, alkalinity, and trace element dosing\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/corals\"\u003eLive corals\u003c\/a\u003e: find new red and pink pieces to color up\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWill Bio-Kalium make my corals more red?\u003c\/strong\u003e\u003cbr\u003eIt intensifies the red and pink pigments corals already have by keeping potassium and boron topped up. It will not add color a coral is not capable of, but it helps faded warm tones come back.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhy does potassium matter for color?\u003c\/strong\u003e\u003cbr\u003ePotassium acts as a nutrient transporter, helping move the compounds corals use to build red and pink chromoproteins. Low or swinging potassium often shows up as dull, browned-out warm tones.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow does this differ from Bio-Metals and Bio-Gen?\u003c\/strong\u003e\u003cbr\u003eBio-Metals drives greens and yellows, Bio-Gen drives whites, blues, and violets, and Bio-Kalium drives reds and pinks. They target different parts of the spectrum and are meant to run together.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I run it on an auto-doser?\u003c\/strong\u003e\u003cbr\u003eYes. It is a stable liquid made for daily dosing and runs cleanly through any dosing pump. Add it to a high-flow area of the tank.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48838103826651,"sku":"BK250","price":27.99,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48838103859419,"sku":"BK500","price":36.99,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48838103892187,"sku":"BK1000","price":48.49,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48838103924955,"sku":"BK5000","price":179.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Bio_Kalium_250mL_Bottle.png?v=1780507343"},{"product_id":"quantum-bio-gen-blue-white-violet-coral-color","title":"Quantum Bio-Gen","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, serif; color: #1a1a1a; max-width: 860px; margin: 0 auto; line-height: 1.7; }\n  .aq-pd h2 { font-size: 1.45em; font-weight: 700; letter-spacing: -0.01em; border-left: 4px solid #006064; padding-left: 12px; margin: 2em 0 0.6em; }\n  .aq-pd h3 { font-size: 1.05em; font-weight: 700; margin: 1.2em 0 0.4em; color: #006064; text-transform: uppercase; letter-spacing: 0.06em; font-family: Arial, sans-serif; }\n  .aq-pd p { margin: 0.5em 0 1em; }\n  .aq-callout { background: #006064; color: #fff; border-radius: 4px; padding: 16px 20px; margin: 1.6em 0; font-family: Arial, sans-serif; font-size: 0.93em; line-height: 1.6; }\n  .aq-callout strong { color: #A7FFEB; }\n  .aq-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 1.6em; }\n  .aq-feature-card { background: #E0F7FA; border-radius: 4px; padding: 14px 16px; border-left: 3px solid #006064; font-family: Arial, sans-serif; font-size: 0.9em; }\n  .aq-feature-card strong { display: block; margin-bottom: 3px; color: #1a1a1a; }\n  .aq-feature-card span { color: #555; }\n  .aq-compare { overflow-x: auto; margin: 1em 0 1.6em; }\n  .aq-compare table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 0.88em; min-width: 520px; }\n  .aq-compare th { background: #006064; color: #fff; padding: 9px 14px; text-align: center; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }\n  .aq-compare th:first-child { background: #003c3f; text-align: left; }\n  .aq-compare td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; text-align: center; }\n  .aq-compare td:first-child { text-align: left; font-weight: 600; color: #444; background: #f4fbfc; }\n  .aq-compare tr:nth-child(even) td:not(:first-child) { background: #E0F7FA; }\n  .aq-specs-table { width: 100%; border-collapse: collapse; margin-top: 1em; font-family: Arial, sans-serif; font-size: 0.93em; }\n  .aq-specs-table th { background: #006064; color: #fff; text-align: left; padding: 9px 14px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.82em; }\n  .aq-specs-table td { padding: 8px 14px; border-bottom: 1px solid #B2EBF2; vertical-align: top; }\n  .aq-specs-table tr:nth-child(even) td { background: #f4fbfc; }\n  .aq-specs-table td:first-child { font-weight: 600; width: 45%; color: #444; }\n  .aq-note { font-family: Arial, sans-serif; font-size: 0.82em; color: #777; margin-top: -0.5em; font-style: italic; }\n  .aq-pd ul { margin: 0.5em 0 1em; padding-left: 1.2em; }\n  .aq-pd li { margin: 0.3em 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"aq-pd\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQuantum Bio-Gen\u003c\/strong\u003e is a bioactive color enhancer built to bring out the whites, blues, and violets in your reef. It supplies bioactive halogens, iodide, fluoride, and bromide, the elements corals use to drive their cool-toned pigments and chromoproteins. Beyond color, Bio-Gen helps reduce coral bleaching, supports calcification, acts as a natural resistance booster, and feeds beneficial macroalgae. If your blue tenuis, purple stylo, or hammer tips have faded toward brown, this is the halogen boost that brings them back. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003cdiv class=\"aq-callout\"\u003e\n    \u003cstrong\u003eStep 4 of the Quantum Bioactive Color system.\u003c\/strong\u003e Intensifies white, blue, and violet coral pigmentation with bioactive iodide, fluoride, and bromide. Dose into high flow, run it daily, and keep total iodine in the 0.06 to 0.09 ppm range.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHow It Works\u003c\/h2\u003e\n  \u003cp\u003eBlue, violet, and white coral pigments depend on a steady supply of halogens, especially iodide. In closed reef systems iodine is consumed quickly by corals, macroalgae, and protein skimming, so it runs low between water changes and the cool tones fade. Bio-Gen replenishes iodide, fluoride, and bromide in bioactive form so corals can keep building those pigments. The same halogens support healthy calcification and help corals resist bleaching stress, which is why Bio-Gen does more than just boost color.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures\u003c\/h2\u003e\n  \u003cdiv class=\"aq-features\"\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eTargets White, Blue and Violet\u003c\/strong\u003e\u003cspan\u003eFormulated to intensify the cool-toned pigments and chromoproteins in LPS, SPS, and soft corals.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eBioactive Halogens\u003c\/strong\u003e\u003cspan\u003eSupplies iodide, fluoride, and bromide in a readily available form.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eReduces Bleaching\u003c\/strong\u003e\u003cspan\u003eHelps corals hold their zooxanthellae and resist bleaching stress.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eSupports Calcification\u003c\/strong\u003e\u003cspan\u003eAids the calcification process for steady skeletal growth.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eFeeds Good Macroalgae\u003c\/strong\u003e\u003cspan\u003eEncourages the beneficial macroalgae you actually want in a refugium.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"aq-feature-card\"\u003e\n\u003cstrong\u003eDosing-Pump Ready\u003c\/strong\u003e\u003cspan\u003eStable liquid that runs cleanly through any auto-doser for daily dosing.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eDosing\u003c\/h2\u003e\n  \u003cp\u003eAdd Bio-Gen into an area of high water flow. Dose daily based on how heavily your reef is stocked, then fine-tune to keep total iodine between 0.06 and 0.09 ppm. As a reference, 1 mL per 100 L (26 gal) raises total iodine by roughly 0.02 ppm, and the other halogens rise proportionally. Test iodine regularly and dose to your results.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eStocking Level\u003c\/th\u003e\n\u003cth\u003eDaily Dose\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eLightly stocked\u003c\/td\u003e\n\u003ctd\u003e0.50 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eModerately stocked\u003c\/td\u003e\n\u003ctd\u003e0.75 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHeavily stocked\u003c\/td\u003e\n\u003ctd\u003e1.00 mL per 100 L (26 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eMaintain total iodine 0.06 to 0.09 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003eIodine is potent at low concentrations. Dose to test results rather than overshooting.\u003c\/p\u003e\n\n  \u003ch2\u003eChoose Your Size\u003c\/h2\u003e\n  \u003cp class=\"aq-note\"\u003eAll four sizes are the same formula. Pick based on system volume and how you dose.\u003c\/p\u003e\n  \u003cdiv class=\"aq-compare\"\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eApprox. Duration*\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e~4 months\u003c\/td\u003e\n\u003ctd\u003eNano and small reefs, or a first trial\u003c\/td\u003e\n\u003ctd\u003eBG250\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e~8 months\u003c\/td\u003e\n\u003ctd\u003eStandard reef tanks, most popular size\u003c\/td\u003e\n\u003ctd\u003eBG500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1000 mL (1 L)\u003c\/td\u003e\n\u003ctd\u003e~15 months\u003c\/td\u003e\n\u003ctd\u003eLarge or heavily stocked reefs\u003c\/td\u003e\n\u003ctd\u003eBG1000\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e5000 mL (5 L)\u003c\/td\u003e\n\u003ctd\u003eYears\u003c\/td\u003e\n\u003ctd\u003eBig systems, frag farms, and auto-doser refills, best value\u003c\/td\u003e\n\u003ctd\u003eBG5000\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"aq-note\"\u003e*Approximate, based on 0.75 mL per 100 L per day on a 75-gallon reef. Your actual usage scales with tank volume and stocking.\u003c\/p\u003e\n\n  \u003ch2\u003eThe Quantum Bioactive Color System\u003c\/h2\u003e\n  \u003cp\u003eBio-Gen is one of the Step 4 Bioactive Color Elements. Each bottle in the line drives a different part of the spectrum, and they are designed to run together for the full effect:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-gen-blue-white-violet-coral-color\"\u003eBio-Gen\u003c\/a\u003e (this product): whites, blues, and violets, via halogens\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-kalium-red-pink-coral-color\"\u003eBio-Kalium\u003c\/a\u003e: reds and pinks, via potassium and boron\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-metals-green-coral-color-enhancer\"\u003eBio-Metals\u003c\/a\u003e: greens and yellows, via iron and manganese\u003c\/li\u003e\n    \u003cli\u003eBio-Enhance: the biomolecule base that ties the system together\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eRun them as a set to supply the full range of biomolecules and major, minor, and trace coloring elements your corals need.\u003c\/p\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable class=\"aq-specs-table\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eQuantum Bio-Gen (Bioactive Color Enhancer)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eQuantum USA\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSystem Step\u003c\/td\u003e\n\u003ctd\u003eStep 4, Bioactive Color Elements\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eColor Target\u003c\/td\u003e\n\u003ctd\u003eWhite, blue, and violet coral pigments\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eKey Elements\u003c\/td\u003e\n\u003ctd\u003eBioactive halogens: iodide, fluoride, bromide\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAlso Supports\u003c\/td\u003e\n\u003ctd\u003eBleaching resistance, calcification, macroalgae\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUse In\u003c\/td\u003e\n\u003ctd\u003eSaltwater reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDaily Dose\u003c\/td\u003e\n\u003ctd\u003e0.50 to 1.00 mL per 100 L by stocking\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIodine Target\u003c\/td\u003e\n\u003ctd\u003eTotal iodine 0.06 to 0.09 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDosing Pump\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e250 mL, 500 mL, 1000 mL, 5000 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-metals-green-coral-color-enhancer\"\u003eQuantum Bio-Metals\u003c\/a\u003e: the green and yellow color enhancer from the same system\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/quantum-bio-kalium-red-pink-coral-color\"\u003eQuantum Bio-Kalium\u003c\/a\u003e: the red and pink color enhancer from the same system\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eReef additives and supplements\u003c\/a\u003e: calcium, alkalinity, and trace element dosing\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/corals\"\u003eLive corals\u003c\/a\u003e: find new blue and violet pieces to color up\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eWill Bio-Gen make my corals more blue?\u003c\/strong\u003e\u003cbr\u003eIt intensifies the blue, violet, and white pigments corals already have by supplying the halogens those pigments depend on, mainly iodide. It will not add color a coral is not capable of, but it brings faded cool tones back to life.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow is this different from Bio-Metals?\u003c\/strong\u003e\u003cbr\u003eBio-Metals drives greens and yellows with iron and manganese. Bio-Gen drives whites, blues, and violets with halogens. They target different ends of the spectrum and are meant to run together.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I overdose iodine?\u003c\/strong\u003e\u003cbr\u003eYes, iodine is active at very low levels. Keep total iodine in the 0.06 to 0.09 ppm range, test regularly, and dose to your results rather than guessing.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I run it on an auto-doser?\u003c\/strong\u003e\u003cbr\u003eYes. It is a stable liquid made for daily dosing and runs cleanly through any dosing pump. Add it to a high-flow area of the tank.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Quantum USA","offers":[{"title":"250 ml","offer_id":48838109495515,"sku":"BG250","price":27.99,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48838109528283,"sku":"BG500","price":36.99,"currency_code":"USD","in_stock":true},{"title":"1000 ml (1 L)","offer_id":48838109561051,"sku":"BG1000","price":48.49,"currency_code":"USD","in_stock":true},{"title":"5000 ml (5 L)","offer_id":48838109593819,"sku":"BG5000","price":179.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Bio_Gen_250mL_Bottle.png?v=1780507677"}],"url":"https:\/\/squeakysaquatics.com\/collections\/reef-supplements.oembed","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}