{"product_id":"red-sea-reef-care-kh-foundation-b","title":"Red Sea Reef Care KH\/Alkalinity Foundation B","description":"\u003cp\u003e\u003cstrong\u003eHolds your reef's most volatile parameter steady.\u003c\/strong\u003e Red Sea Reef Foundation B is the ready-to-use liquid alkalinity (KH) component of Red Sea's three-part Reef Foundation program, replenishing the carbonate that corals consume fastest as they build skeleton. It ships as a blend of carbonates balanced to the ratio found in natural seawater, and needs no mixing — measure and dose straight from the bottle.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise, predictable dosing\u003c\/strong\u003e — 1 mL per 100 L (25 US gal) raises alkalinity by 0.1 dKH (0.036 meq\/L), so small daily corrections are easy to calculate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced to natural seawater ratios\u003c\/strong\u003e — a blend of carbonates formulated to avoid the ionic imbalances that plain baking soda or washing soda dosing can cause over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with Foundation A and C\u003c\/strong\u003e — designed to be dosed alongside Calcium (A) and Magnesium (C) so alkalinity doesn't rise in isolation and strip the other two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to use\u003c\/strong\u003e — no mixing, no RO\/DI water needed, works with any dosing pump or manual dosing routine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low cost per correction\u003c\/strong\u003e — see Cost per litre below; the 5 L pack works out cheapest per dKH raised.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eDose for +0.1 dKH\u003c\/th\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003eRED281\u003c\/td\u003e\n\u003ctd\u003e1 mL per 100 L\u003c\/td\u003e\n\u003ctd\u003eReady-to-use liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003eRED281b\u003c\/td\u003e\n\u003ctd\u003e1 mL per 100 L\u003c\/td\u003e\n\u003ctd\u003eReady-to-use liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 L\u003c\/td\u003e\n\u003ctd\u003eRED281a\u003c\/td\u003e\n\u003ctd\u003e1 mL per 100 L\u003c\/td\u003e\n\u003ctd\u003eReady-to-use liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCost per litre\u003c\/h3\u003e\n\u003cp\u003eBuying Foundation B by the litre of alkalinity correction, not the bottle price, is the fair way to compare pack sizes. A full 500 mL bottle carries enough to raise 5,000 L of tank water by 1 dKH; the 5 L pack raises 50,000 L by the same 1 dKH. At current prices, that works out to roughly $5.80 per 1,000 L corrected on the 500 mL bottle, falling to about $3.42 per 1,000 L on the 5 L pack — both round to under 1c per litre on the product tile, but the 5 L is genuinely the cheaper way to buy if you dose a display tank regularly.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eLitres raised 1 dKH per pack\u003c\/th\u003e\n\u003cth\u003eCost per 1,000 L corrected\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e$29.00\u003c\/td\u003e\n\u003ctd\u003e5,000 L\u003c\/td\u003e\n\u003ctd\u003e$5.80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e$45.00\u003c\/td\u003e\n\u003ctd\u003e10,000 L\u003c\/td\u003e\n\u003ctd\u003e$4.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 L\u003c\/td\u003e\n\u003ctd\u003e$171.00\u003c\/td\u003e\n\u003ctd\u003e50,000 L\u003c\/td\u003e\n\u003ctd\u003e$3.42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eDose to measured demand, not to a schedule. Test alkalinity before dosing, then add 1 mL per 100 L of tank water for every 0.1 dKH you need to raise it, split across small daily doses rather than one large correction. KH is the parameter worth testing most often on a reef tank — aim for stability at a chosen number rather than chasing a \"perfect\" figure.\u003c\/p\u003e\n\u003ch4\u003eCan I dose Foundation B by hand?\u003c\/h4\u003e\n\u003cp\u003eYes. It's sold as a manual-dosing liquid and also works through any peristaltic or gravity dosing pump set up for the Reef Foundation program.\u003c\/p\u003e\n\u003ch4\u003eHow often should I dose?\u003c\/h4\u003e\n\u003cp\u003eDaily, in small amounts, based on your last test result. Large infrequent corrections cause the swings that trigger coral stress, not the stability the product is designed to hold.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for marine and reef aquariums running a KH\/alkalinity dosing regime, alongside Foundation A (Calcium) and Foundation C (Magnesium). Not a substitute for regular alkalinity testing — dosing without testing risks overshooting a tank with low demand. Not intended for freshwater aquariums.\u003c\/p\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eKeep out of reach of children and pets. Avoid prolonged skin and eye contact and rinse with water if it occurs. Store away from direct sunlight. Safe for fish, coral and invertebrates when dosed at the recommended rate — as with any concentrate, don't pour it directly onto livestock or coral tissue.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reef-care-calcium-foundation-a\"\u003eRed Sea Reef Care Calcium+ Foundation A\u003c\/a\u003e — the calcium half of the same three-part program; alkalinity and calcium need to move together.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reef-care-magnesium-foundation-c\"\u003eRed Sea Reef Care Magnesium Foundation C\u003c\/a\u003e — magnesium is what lets calcium and alkalinity hold their levels once you've dialled them in.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reef-foundation-pro-multi-testing-kit\"\u003eRed Sea Reef Foundation Pro Multi Testing Kit\u003c\/a\u003e — for measuring KH before you dose, not after.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reef-care-kh-foundation-b-powder\"\u003eRed Sea Reef Care KH\/Alkalinity Foundation B (Powder)\u003c\/a\u003e — same element in a concentrated dry format, cheaper per litre corrected on larger systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by the manufacturer's standard consumer guarantees in addition to your rights under Australian Consumer Law. Standard parcel delivery Australia-wide.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat's the difference between Foundation B liquid and Foundation B powder?\u003c\/h4\u003e\n\u003cp\u003eBoth replenish the same carbonate alkalinity. The liquid is ready to dose straight from the bottle; the powder is mixed into a stock solution with RO\/DI water and works out cheaper per litre of correction on larger systems.\u003c\/p\u003e\n\u003ch4\u003eCan I dose Foundation A, B and C at the same time?\u003c\/h4\u003e\n\u003cp\u003eDose them separately, at different times or through separate dosing pump heads. Mixing concentrated calcium and alkalinity solutions together before dilution can cause them to precipitate.\u003c\/p\u003e\n\u003ch4\u003eWill Foundation B affect my calcium or magnesium levels?\u003c\/h4\u003e\n\u003cp\u003eNot directly, but raising alkalinity without keeping calcium and magnesium in step is what causes the \"chasing your tail\" swings reef keepers describe — dose all three against their own test results.\u003c\/p\u003e\n\u003ch4\u003eHow long will a bottle last?\u003c\/h4\u003e\n\u003cp\u003eIt depends entirely on your tank's alkalinity demand — a heavily stocked SPS system will use it faster than a soft coral tank. Use the cost-per-litre figures above against your own dosing log to estimate it.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"500ml","offer_id":54774153052451,"sku":"RED281","price":29.0,"currency_code":"AUD","in_stock":false},{"title":"1ltr","offer_id":55335144194339,"sku":"RED281b","price":45.0,"currency_code":"AUD","in_stock":true},{"title":"5ltr","offer_id":55335144227107,"sku":"RED281a","price":171.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Red_Sea_Reef_Foundation_B_-_KH_Alk_500ml.jpg?v=1782112585","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/red-sea-reef-care-kh-foundation-b","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}