{"product_id":"red-sea-calcium-pro-test-kit","title":"Red Sea Calcium Pro Test Kit","description":"\u003cdiv class=\"sectionContent\"\u003e\n  \u003cp\u003eThe Red Sea \u003cstrong\u003eCalcium Pro Test Kit\u003c\/strong\u003e is a high-accuracy titration test kit for measuring calcium in reef aquariums. Calcium is one of the most important elements for coral skeletal growth, and maintaining stable levels (typically 400–450 ppm) is essential for healthy SPS and LPS corals. This kit delivers professional-grade precision at ±2.5 ppm.\u003c\/p\u003e\n  \u003cp\u003ePairs perfectly with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-pro-multi-test-kit-ca-alk-mg\"\u003eReef Foundation Pro Test Kit (Ca\/Alk\/Mg)\u003c\/a\u003e, the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-trace-colors-pro-multi-test-kit-iodine-potassium-iron\"\u003eTrace Colors PRO Test Kit\u003c\/a\u003e, and any Red Sea 4-Part Reef Care Dosing System (\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-4-part-rcp-complete-reef-care-dosing-system-small-150l-40-gal\"\u003eSmall\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-4-part-rcp-complete-reef-care-dosing-system-medium-300l-80-gal\"\u003eMedium\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-4-part-rcp-complete-reef-care-dosing-system-large-600l-160-gal\"\u003eLarge\u003c\/a\u003e).\u003c\/p\u003e\n  \u003cp\u003eLooking for more testing gear? Browse our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/test-kits-reagents\" target=\"_blank\"\u003eTest Kits \u0026amp; Reagents\u003c\/a\u003e collection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eFeatures\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003cul\u003e\n    \u003cli\u003eHigh-accuracy calcium titration test (±2.5 ppm)\u003c\/li\u003e\n    \u003cli\u003e75 tests per kit\u003c\/li\u003e\n    \u003cli\u003eProfessional-grade precision for reef aquarium monitoring\u003c\/li\u003e\n    \u003cli\u003eAffordable reagent refills available\u003c\/li\u003e\n    \u003cli\u003ePart of the complete Red Sea Reef Care Program\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eSpecifications\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eRed Sea\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCalcium Pro Test Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eParameter Tested\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCalcium (Ca)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e±2.5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTests Per Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e75\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTest Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eTitration\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSuitable For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eSaltwater \/ Reef\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eFAQ\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat calcium range should I aim for?\u003c\/strong\u003e\u003cbr\u003eMost reef tanks run 400–450 ppm. Stability matters more than hitting an exact number.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow often should I test calcium?\u003c\/strong\u003e\u003cbr\u003eWeekly for most reefs; 2–3 times per week if you're running a heavy SPS load or dosing manually.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eIs this a reef\/saltwater-only kit?\u003c\/strong\u003e\u003cbr\u003eYes — calcium testing at this precision is specifically for saltwater reef systems.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eCan I get refills?\u003c\/strong\u003e\u003cbr\u003eYes — Red Sea sells individual reagent refills so you're not buying the full kit every time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Red Sea","offers":[{"title":"Default Title","offer_id":48074119020763,"sku":"R21405","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_95b2f645-9612-423c-8409-4cc58527fdd1.png?v=1766428081","url":"https:\/\/squeakysaquatics.com\/products\/red-sea-calcium-pro-test-kit","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}