{"product_id":"red-sea-foundation-a-calcium","title":"Red Sea Foundation A Calcium+","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e\n\u003cp\u003eRed Sea Foundation A Calcium+ is a liquid calcium and strontium supplement for marine tanks. Skimming and coral skeleton growth pull calcium from the water. If calcium is too low, skeletal growth can stop and colour can fade or brown.\u003c\/p\u003e\n\u003cp\u003eIt is a concentrated mix of calcium and strontium salts in a seawater-like ratio, for use with Red Sea’s Foundation alkalinity and magnesium additives.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium and strontium:\u003c\/strong\u003e Salts in the biological ratio used for coral skeleton formation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcification:\u003c\/strong\u003e A stable calcium supply is the main structural building block for coral skeletons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH, alkalinity, and magnesium:\u003c\/strong\u003e Works with the other Foundation parts to keep high-demand reefs in range.\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\u003eDosing hardware:\u003c\/strong\u003e Formulated to limit crusting on 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 410–450 ppm calcium:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLPS \/ SPS frags and growing tanks:\u003c\/strong\u003e 1 ml (raises calcium by about 2 ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed reef:\u003c\/strong\u003e 1 ml (raises calcium by about 2 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 B (alkalinity) and Foundation C (magnesium)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep calcium stable so it does not precipitate. Test before large changes. A Red Sea Calcium 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 and tips do not crust.\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":56329428959537,"sku":null,"price":29.95,"currency_code":"AUD","in_stock":true},{"title":"1000ml","offer_id":56329428992305,"sku":null,"price":45.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/6066\/3601\/files\/redsea_founda_calcium.png?v=1789709890","url":"https:\/\/www.williamstownaquarium.com.au\/products\/red-sea-foundation-a-calcium","provider":"Williamstown Aquarium","version":"1.0","type":"link"}