{"product_id":"seachem-reef-strontium","title":"Seachem Reef Strontium","description":"\u003cdiv style=\"line-height:1.6;color:#333;\"\u003e\n\u003cp\u003e\u003cstrong\u003eSeachem Reef Strontium\u003c\/strong\u003e restores and maintains strontium in a reef aquarium at the levels found in natural seawater. Corals, coralline algae, clams, and other calcifying organisms draw on strontium to build strong skeletons and spread color across your live rock, and it is steadily used up, so it needs to be replaced. This concentrated supplement delivers 10,000 mg\/L of strontium in a readily available gluconate complex. Pair it with the rest of your \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ereef additives and supplements\u003c\/a\u003e for balanced, healthy growth.\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 #006064;padding-left:8px;\"\u003eWhy Strontium Matters\u003c\/h3\u003e\n\u003cul style=\"margin:4px 0 0;padding-left:20px;\"\u003e\n\u003cli\u003eSupports skeletal growth in SPS and LPS corals and encourages coralline algae\u003c\/li\u003e\n\u003cli\u003eUsed by clams and other calcifying invertebrates alongside calcium\u003c\/li\u003e\n\u003cli\u003eConcentrated 10,000 mg\/L strontium in a bioavailable gluconate complex\u003c\/li\u003e\n\u003cli\u003eHelps hold reef strontium in the natural seawater range of 8 to 12 mg\/L\u003c\/li\u003e\n\u003cli\u003eReef safe and easy to dose with the built-in cap measure\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 #006064;padding-left:8px;\"\u003eHow to Dose\u003c\/h3\u003e\n\u003cp style=\"margin:4px 0 0;\"\u003eFor routine maintenance, use 1 capful (5 mL) for every 80 L (20 US gallons) twice a week. Each 5 mL per 80 L raises strontium by about 0.6 mg\/L, so aim to hold the tank in the 8 to 12 mg\/L range and adjust from there.\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:8px 0;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;text-align:left;\"\u003eStep\u003c\/th\u003e\n\u003cth style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;text-align:left;\"\u003eGuideline\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eRoutine dose\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e1 capful (5 mL) per 20 US gallons, twice weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eTarget level\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e8 to 12 mg\/L strontium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003ePer dose effect\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eAbout 0.6 mg\/L per 5 mL in 80 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"margin:6px 0 0;\"\u003eMake large adjustments slowly to avoid overshooting your target. Excess strontium can enhance the loss of carbonate alkalinity, so do not mix Reef Strontium directly with a carbonate or calcium supplement, and test your strontium level regularly.\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 #006064;padding-left:8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:8px 0;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;text-align:left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;text-align:left;\"\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e100 mL\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eNano and small reef tanks, or trying it out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e250 mL\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eMost home reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e500 mL\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eLarger reefs and SPS-heavy systems that use strontium quickly\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 #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:8px 0;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;font-weight:600;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eReef strontium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;font-weight:600;\"\u003eConcentration\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e10,000 mg\/L strontium (gluconate complex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;font-weight:600;\"\u003eTarget level\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e8 to 12 mg\/L in the aquarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;font-weight:600;\"\u003eRoutine dose\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e5 mL per 20 US gallons, twice weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;font-weight:600;\"\u003eWater type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSaltwater and reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E0F7FA;border:1px solid #B2EBF2;padding:6px 10px;font-weight:600;\"\u003eAvailable sizes\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e100 mL, 250 mL, 500 mL\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 #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul style=\"margin:4px 0 0;padding-left:20px;\"\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-complete\"\u003eSeachem Reef Complete\u003c\/a\u003e: bioavailable calcium for coral and coralline growth\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-advantage-magnesium\"\u003eSeachem Reef Advantage Magnesium\u003c\/a\u003e: keeps magnesium in balance so calcium and alkalinity stay stable\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-fusion-1\"\u003eSeachem Reef Fusion 1 \u0026amp; 2\u003c\/a\u003e: a complete two-part calcium and alkalinity system\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-reef-plus\"\u003eSeachem Reef Plus\u003c\/a\u003e: reef vitamins and trace elements for color and vitality\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003eSaltwater collection\u003c\/a\u003e: browse the rest of our reef care lineup\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 #006064;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp style=\"margin:6px 0 0;\"\u003e\u003cstrong\u003eDo I really need to dose strontium?\u003c\/strong\u003e\u003cbr\u003eCorals and coralline algae steadily consume strontium, and water changes alone often do not keep pace in a growing reef. Dosing keeps it in the natural seawater range for healthy skeletal growth.\u003c\/p\u003e\n\u003cp style=\"margin:6px 0 0;\"\u003e\u003cstrong\u003eCan I mix it with my calcium or alkalinity supplement?\u003c\/strong\u003e\u003cbr\u003eNo. Do not mix Reef Strontium directly with a carbonate or calcium supplement. Dose them separately, at different times, to avoid precipitation and alkalinity loss.\u003c\/p\u003e\n\u003cp style=\"margin:6px 0 0;\"\u003e\u003cstrong\u003eHow do I know how much to add?\u003c\/strong\u003e\u003cbr\u003eTest your strontium level and dose toward the 8 to 12 mg\/L target. Make large corrections gradually rather than all at once.\u003c\/p\u003e\n\u003cp style=\"margin:6px 0 0;\"\u003e\u003cstrong\u003eIs it safe for fish-only tanks?\u003c\/strong\u003e\u003cbr\u003eReef Strontium is intended for reef systems with corals and other calcifying life. A fish-only saltwater tank does not need it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Seachem","offers":[{"title":"100 ml","offer_id":48731205697755,"sku":"375","price":5.17,"currency_code":"USD","in_stock":false},{"title":"250 ml","offer_id":48731205730523,"sku":"376","price":7.38,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":48731205763291,"sku":"373","price":11.33,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/0375-Reef-Strontium-100-mL.png?v=1777546233","url":"https:\/\/squeakysaquatics.com\/products\/seachem-reef-strontium","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}