{"product_id":"red-sea-foundation-c-magnesium","title":"Red Sea Foundation C Magnesium+","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e\n\u003cp\u003eRed Sea Foundation C Magnesium+ is a liquid magnesium supplement for marine tanks. Skimming and coral calcification pull foundation elements from the water. If magnesium is too low, calcium and alkalinity are more likely to precipitate, which can stall growth and dull colour.\u003c\/p\u003e\n\u003cp\u003eIt is a concentrated mix of magnesium salts balanced to the chloride\/sulphate ratio of natural seawater, for use with Red Sea’s Foundation calcium and alkalinity additives.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIonic balance:\u003c\/strong\u003e Magnesium salts to hold the ratio that helps keep calcium in solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcification:\u003c\/strong\u003e Stable magnesium supports normal coral skeleton formation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuffering:\u003c\/strong\u003e Helps pH, alkalinity, and calcium stay in a workable range in high-demand reefs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquid ions:\u003c\/strong\u003e Ready to use without converting dry salts in the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow residue:\u003c\/strong\u003e Inorganic salt mix; not an organic food, so it does not add the same waste load as coral foods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecipitation:\u003c\/strong\u003e Formulated to limit crusting on dosing tips and pumps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWater and system compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater:\u003c\/strong\u003e Marine and reef aquariums only. Not for freshwater or planted tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLivestock:\u003c\/strong\u003e SPS, LPS, soft corals, and calcareous algae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoser:\u003c\/strong\u003e Stable unrefrigerated and unstirred in a dosing container.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDosing and instructions\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eAlways follow dosage \u0026amp; directions on product packaging.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eCalculate true water volume. Typical daily use per 100 litres, aiming for 1280–1380 ppm magnesium:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLPS \/ SPS frags and growing tanks:\u003c\/strong\u003e 1 ml (raises Mg by about 1 ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed reef:\u003c\/strong\u003e 1 ml (raises Mg by about 1 ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPS-dominant:\u003c\/strong\u003e 2–5 ml, matched to skeletal uptake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low nutrient (ULNS):\u003c\/strong\u003e Dose to match measured uptake of Foundation A (calcium) and B (alkalinity)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMagnesium moves slowly but should stay stable. Test before large changes. A Red Sea Magnesium Pro test kit is suitable. Do not raise doses without testing.\u003c\/p\u003e\n\u003ch3\u003eStorage\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottle:\u003c\/strong\u003e Cool, dry cupboard out of direct sunlight. Do not refrigerate or freeze.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoser:\u003c\/strong\u003e Flush lines with RO\/DI water from time to time so delivery stays accurate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Red Sea\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e Reef Care Program (Reef Foundation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 500 ml \/ 1000 ml\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Red Sea","offers":[{"title":"500ml","offer_id":56329463857457,"sku":null,"price":29.95,"currency_code":"AUD","in_stock":true},{"title":"1000ml","offer_id":56329463890225,"sku":null,"price":46.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/6066\/3601\/files\/redsea_magplus.png?v=1789706344","url":"https:\/\/www.williamstownaquarium.com.au\/products\/red-sea-foundation-c-magnesium","provider":"Williamstown Aquarium","version":"1.0","type":"link"}