{"product_id":"seachem-reef-advantage-calcium","title":"Seachem Reef Advantage Calcium","description":"\u003ch2\u003eSeachem Reef Advantage Calcium\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSeachem Reef Advantage Calcium\u003c\/strong\u003e is a concentrated powdered ionic calcium supplement for marine reef aquariums, supplied in a 250 g container. It is designed for reef keepers maintaining calcium levels for coral growth while also supplying magnesium and strontium in proportionate amounts.\u003c\/p\u003e\n\u003cp\u003eThis non-caustic formula has a pH of 8.3–8.6 and is formulated to restore and maintain calcium at levels found in natural seawater. Unlike limewater (kalkwasser), it does not have a caustic pH and will not deplete magnesium.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvides ionic calcium for marine aquarium use.\u003c\/li\u003e\n\u003cli\u003eIncludes magnesium and strontium at typical utilisation ratios of 100:5:0.1 (Ca:Mg:Sr).\u003c\/li\u003e\n\u003cli\u003eHelps maintain magnesium and strontium while maintaining calcium.\u003c\/li\u003e\n\u003cli\u003eCan be added directly to the aquarium after dissolving in freshwater.\u003c\/li\u003e\n\u003cli\u003eUsed as directed, it will not deplete alkalinity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDosage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner:\u003c\/strong\u003e Use 5 g (1 level teaspoon) per 150 L (40 gallons) twice weekly. Dissolve in at least 250 mL (1 cup) of freshwater. Check calcium every 2 weeks and adjust the amount or frequency accordingly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced:\u003c\/strong\u003e Test calcium, then use the above regimen until calcium reaches 380–420 mg\/L. Each 5 g per 150 L raises calcium by approximately 12 mg\/L. Do not exceed 10 g per 150 L per day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert:\u003c\/strong\u003e For continuous drip dosing, use m=vc\/400, where m is grams to add to top-off water, v is aquarium volume in litres and c is the desired calcium increase in mg\/L.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDo not directly mix with any carbonate supplement.\u003c\/li\u003e\n\u003cli\u003eAdd calcium and carbonate additives on alternate days, or at least 30 minutes apart.\u003c\/li\u003e\n\u003cli\u003eWhen used with Reef Calcium™, it is not necessary to exceed 380 mg\/L total calcium.\u003c\/li\u003e\n\u003cli\u003eUse Reef Status™: Calcium to measure calcium.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e250 g Seachem Reef Advantage Calcium powder.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much Seachem Reef Advantage Calcium should I use in a 150 L aquarium?\u003c\/strong\u003e\u003cbr\u003eUse 5 g (1 level teaspoon) per 150 L twice a week, dissolved in at least 250 mL of freshwater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much will a 5 g dose raise calcium?\u003c\/strong\u003e\u003cbr\u003eEach 5 g dose per 150 L raises calcium by about 12 mg\/L.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat calcium level should I aim for in my reef aquarium?\u003c\/strong\u003e\u003cbr\u003eFollow the addition regimen until calcium is adjusted to 380–420 mg\/L, then use as required to maintain the level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I add this calcium supplement with a carbonate additive?\u003c\/strong\u003e\u003cbr\u003eDo not directly mix it with a carbonate supplement. Add the two additives on alternate days or at least 30 minutes apart.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum daily dosage?\u003c\/strong\u003e\u003cbr\u003eDo not exceed 10 g per 150 L per day.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes Reef Advantage Calcium contain other reef elements?\u003c\/strong\u003e\u003cbr\u003eYes. It includes magnesium and strontium in a 100:5:0.1 calcium, magnesium and strontium ratio.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"250G","offer_id":50599086784731,"sku":null,"price":296.0,"currency_code":"ZAR","in_stock":true},{"title":"500G","offer_id":50599086817499,"sku":null,"price":508.0,"currency_code":"ZAR","in_stock":true},{"title":"1KG","offer_id":50599086850267,"sku":null,"price":876.0,"currency_code":"ZAR","in_stock":true},{"title":"4KG","offer_id":50599086883035,"sku":null,"price":3159.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/9483\/5163\/files\/seachem-reef-advantage-calcium-concentrated-powder-ionic-calcium-for-aquarium-250g.webp?v=1791460213","url":"https:\/\/premiumaquatics.co.za\/products\/seachem-reef-advantage-calcium","provider":"Premium Aquatics ","version":"1.0","type":"link"}