{"product_id":"red-sea-reef-foundation-c-magnesium-mg-1000-ml-liquid","title":"Red Sea Reef Foundation C - Magnesium (MG) (1000 ml) Liquid","description":"\u003cdiv class=\"sectionContent\"\u003e\n  \u003cp\u003eRed Sea Reef Foundation C is a concentrated magnesium supplement from Red Sea's Reef Care Program. Magnesium works hand-in-hand with calcium and alkalinity to support healthy coral growth, stable calcification, and vibrant reef chemistry. Dosing Foundation C alongside A and B keeps the big three balanced so your corals can lay down skeleton without hitting chemistry roadblocks.\u003c\/p\u003e\n  \u003cp\u003eLooking for more reef chemistry? Browse our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-treatments\" target=\"_blank\"\u003eWater Treatments\u003c\/a\u003e.\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\u003eRaises and maintains magnesium (Mg) in reef aquariums\u003c\/li\u003e\n    \u003cli\u003eBlend of magnesium, chloride, and sulfate salts in their natural seawater ratio\u003c\/li\u003e\n    \u003cli\u003ePart of the Red Sea Reef Foundation program (A, B, C)\u003c\/li\u003e\n    \u003cli\u003e100% reef safe when dosed according to test results\u003c\/li\u003e\n    \u003cli\u003e1000 ml bottle — great value for mid-to-large reef systems\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;\"\u003eReef Foundation C — Magnesium (Mg)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSize\/Volume\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1000 ml \/ 33.8 oz\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\u003eTarget Mg Level\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1300–1400 ppm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e730773220342\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\u003eHow often should I dose Foundation C?\u003c\/strong\u003e\u003cbr\u003eTest magnesium weekly with a reliable kit and dose as needed to keep Mg in the 1300–1400 ppm range. Refer to the Red Sea label for gallons-per-ml dosing math.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need all three Foundation products?\u003c\/strong\u003e\u003cbr\u003eYes for an active reef. A (calcium), B (alkalinity), and C (magnesium) are designed to work together. Low magnesium makes it very difficult to hold calcium and alkalinity stable.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eIs this reef safe?\u003c\/strong\u003e\u003cbr\u003eYes, at correct dosing. Always test before dosing — adding magnesium without a test result can cause swings that stress corals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Red Sea","offers":[{"title":"Default Title","offer_id":48074159620315,"sku":"R22034","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_e7f2659e-b634-45cf-9131-0de8a5f96939.jpg?v=1766432084","url":"https:\/\/squeakysaquatics.com\/products\/red-sea-reef-foundation-c-magnesium-mg-1000-ml-liquid","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}