{"product_id":"red-sea-reef-care-no3-po4-reducer","title":"Red Sea Reef Care Nitrate NO3 and Phosphate PO4 Reducer","description":"\u003cp\u003e\u003cstrong\u003eLowers nitrate and phosphate the biological way, not with resin.\u003c\/strong\u003e Red Sea NO3:PO4-X is a carbon-dosing nutrient reducer — it feeds the bacterial population that consumes nitrate and phosphate together, letting your protein skimmer export the resulting biomass. Dosed daily against your own test results, it's a controllable alternative to nitrate and phosphate media that doesn't need replacing on a schedule.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces NO3 and PO4 together\u003c\/strong\u003e — one product addresses both, rather than dosing separate media for each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControllable\u003c\/strong\u003e — the daily dose is set by your measured nitrate level, not a fixed schedule, so you're not overshooting into an algae-starved tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with your skimmer\u003c\/strong\u003e — efficient protein skimming is what actually exports the bacterial biomass this product grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide size range\u003c\/strong\u003e — from a 100 mL trial size for nano tanks up to 5 L for larger systems on ongoing carbon dosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForgiving of an accidental overdose\u003c\/strong\u003e — Red Sea states a large accidental overdose shouldn't cause irreversible harm, provided the skimmer is adequately rated.\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\u003eFormat\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003eRED308\u003c\/td\u003e\n\u003ctd\u003eTrial size, nano-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003eRED289\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003eRED290\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 L\u003c\/td\u003e\n\u003ctd\u003eRED289a\u003c\/td\u003e\n\u003ctd\u003eBulk, larger systems\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 is set by your measured nitrate level, not a flat rate. For mixed reef, marine fish and frag tanks:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMeasured NO3\u003c\/th\u003e\n\u003cth\u003eDaily dose\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbove 10 ppm\u003c\/td\u003e\n\u003ctd\u003e3 mL per 100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5–10 ppm\u003c\/td\u003e\n\u003ctd\u003e2 mL per 100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1–2.5 ppm\u003c\/td\u003e\n\u003ctd\u003e1 mL per 100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSPS-dominant and ultra-low nutrient systems (ULNS) run lower thresholds — test more often and dose more conservatively. Dose daily and consistently; if you miss a day, resume at the current dose rather than doubling up to catch up. If nitrate or phosphate drops below your target range, cut the daily dose by 50% immediately rather than stopping outright.\u003c\/p\u003e\n\u003ch4\u003eDo I need a protein skimmer to use this?\u003c\/h4\u003e\n\u003cp\u003eYes. Efficient skimming provides the oxygenation the bacterial population needs and removes the biomass it produces — without it, dosing carbon can do more harm than good.\u003c\/p\u003e\n\u003ch3\u003eTank coverage\u003c\/h3\u003e\n\u003cp\u003eBecause the dose depends on measured nitrate rather than a fixed rate, coverage here is best read as tank litres you can keep dosed for 30 days at the highest maintenance rate (3 mL per 100 L daily, for tanks running above 10 ppm NO3) — the conservative, worst-case reading of the dosing table. On that basis, a 100 mL bottle covers a 111 L tank for 30 days; the 5 L pack covers a 5,556 L equivalent for the same 30 days. Lower nitrate readings stretch every size further than these figures show.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eTank litres covered for 30 days at 3 mL\/100 L daily\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e111 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e556 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e1,111 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 L\u003c\/td\u003e\n\u003ctd\u003e5,556 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for marine and reef aquariums with an efficient, correctly-sized protein skimmer, where nitrate or phosphate needs reducing without resin media. Not suitable for tanks without adequate skimming — the bacterial biomass this product produces needs somewhere to go. Not a quick fix for an algae outbreak already underway; it works alongside, not instead of, addressing the nutrient source.\u003c\/p\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eSafe for fish, coral and microfauna when dosed as directed. Keep out of reach of children and pets. Store away from direct sunlight. A large accidental overdose is unlikely to cause irreversible damage provided the skimmer is adequately rated, but should still be corrected back to the measured-dose routine as soon as it's noticed.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\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 NO3 and PO4 before setting your daily dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reef-care-kh-foundation-b\"\u003eRed Sea Reef Care KH\/Alkalinity Foundation B\u003c\/a\u003e — a stable, well-skimmed reef still needs its alkalinity dosed separately.\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\u003eHow quickly will this reduce my nitrate and phosphate?\u003c\/h4\u003e\n\u003cp\u003eGradually — it's designed for controlled, ongoing reduction rather than a rapid fix, and dosing too aggressively risks crashing both nutrients at once.\u003c\/p\u003e\n\u003ch4\u003eCan I use this without a protein skimmer?\u003c\/h4\u003e\n\u003cp\u003eNot recommended. Without efficient skimming, the bacterial biomass the product produces has nowhere to go and can cloud the water or strip oxygen.\u003c\/p\u003e\n\u003ch4\u003eWhat happens if I dose too much by accident?\u003c\/h4\u003e\n\u003cp\u003eRed Sea states a large accidental overdose shouldn't cause irreversible damage with an adequately rated skimmer running, but you should return to the measured-dose routine immediately and watch oxygenation closely.\u003c\/p\u003e\n\u003ch4\u003eIs this safe for a tank with fish only, no coral?\u003c\/h4\u003e\n\u003cp\u003eYes — it's stated safe for fish, coral and microfauna, so it works in a fish-only or mixed system as well as a reef.\u003c\/p\u003e\n\u003ch4\u003eWhich size should I start with?\u003c\/h4\u003e\n\u003cp\u003eThe 100 mL trial size is a way to confirm the method works for your tank before committing to a larger pack.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"100ml","offer_id":54774154297635,"sku":"RED308","price":15.0,"currency_code":"AUD","in_stock":false},{"title":"500ml","offer_id":55335148749091,"sku":"RED289","price":34.5,"currency_code":"AUD","in_stock":true},{"title":"1ltr","offer_id":55335148781859,"sku":"RED290","price":56.5,"currency_code":"AUD","in_stock":true},{"title":"5ltr","offer_id":55335148814627,"sku":"RED289a","price":218.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/red-sea-reef-care-nitrate-no-10135200989475-1-dq.webp?v=1790372841","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/red-sea-reef-care-no3-po4-reducer","provider":"Nicks AOT","version":"1.0","type":"link"}