{"product_id":"red-sea-phosphate-pro-testing-kit-100-tests","title":"Red Sea Phosphate Pro Testing Kit 100 Tests","description":"\u003cp\u003e\u003cstrong\u003eMeasures phosphate down to the level that actually shapes coral colour.\u003c\/strong\u003e The Red Sea Phosphate Pro is a colour-comparator test kit built for reef aquariums, where the difference between a healthy SPS system and a nuisance-algae outbreak often sits inside a range most hobby test kits can't resolve. It reads 0–5 ppm PO4 to an accuracy of ±0.02 ppm, giving a result precise enough to guide dosing rather than just confirm phosphate is present.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0–5 ppm range at ±0.02 ppm accuracy\u003c\/strong\u003e — resolves the low readings that matter in a reef tank, where many kits can't distinguish 0.05 ppm from 0.15 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour comparator method\u003c\/strong\u003e — no digital meter to calibrate, no photometer needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 tests per kit\u003c\/strong\u003e — weekly testing for close to two years before a refill is needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReagent refill available\u003c\/strong\u003e — restock the chemistry without buying the comparator again\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart of the Red Sea Reef Care Program\u003c\/strong\u003e — designed to be read alongside Nitrate Pro results to guide biological nutrient reduction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasurement range\u003c\/th\u003e\n\u003ctd\u003e0–5 ppm PO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±0.02 ppm PO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTests per kit\u003c\/th\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTest method\u003c\/th\u003e\n\u003ctd\u003eColour comparator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eSaltwater (reef)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRefill available\u003c\/th\u003e\n\u003ctd\u003eYes — Red Sea Phosphate Pro Reagent Refill Kit, 100 tests\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComparator block and viewer\u003c\/li\u003e\n\u003cli\u003eTest vials\u003c\/li\u003e\n\u003cli\u003eReagents for 100 tests\u003c\/li\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReading the result\u003c\/h3\u003e\u003cp\u003eRed Sea's own nutrient management guidance gives different phosphate targets depending on what the system is aiming for, not one single correct number.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSystem type\u003c\/th\u003e\n\u003cth\u003eTarget PO4\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMixed reef \/ SPS frag tank\u003c\/td\u003e\n\u003ctd\u003e0.08–0.12 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSPS-dominant system\u003c\/td\u003e\n\u003ctd\u003e0.01–0.02 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltra-low nutrient system (ULNS)\u003c\/td\u003e\n\u003ctd\u003e0 ppm (undetectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for saltwater and reef aquariums monitoring phosphate as part of a nutrient control or dosing routine\u003c\/li\u003e\n\u003cli\u003eNot suitable for freshwater test panels — the range and colour scale are calibrated to reef-tank chemistry\u003c\/li\u003e\n\u003cli\u003eNot a substitute for ICP testing where lab-grade trace-element precision is required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-phosphate-pro-reagent-refill-kit\"\u003eRed Sea Phosphate Pro Reagent Refill Kit\u003c\/a\u003e — restock the chemistry once the 100 tests are used\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-marine-care-multi-test-kit\"\u003eRed Sea Marine Care Multi Test Kit\u003c\/a\u003e — for a broader saltwater parameter panel alongside phosphate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eReagents carry a use-by date printed on the pack — check it before testing, since expired reagents give false readings. Consumer guarantees apply under Australian Consumer Law in addition to any manufacturer terms. Standard parcel delivery applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow many tests does this kit include?\u003c\/h4\u003e\u003cp\u003e100 tests. A weekly testing routine will run for close to two years before the reagents need restocking.\u003c\/p\u003e\u003ch4\u003eDo I need the full kit or the reagent refill?\u003c\/h4\u003e\u003cp\u003eBuy the full kit if this is your first Phosphate Pro test kit — you need the comparator and vials. If you already own a Phosphate Pro comparator and only need fresh chemistry, the reagent refill restores the same 100 tests at a lower cost.\u003c\/p\u003e\u003ch4\u003eCan I use this on a freshwater tank?\u003c\/h4\u003e\u003cp\u003eIt's built and calibrated for saltwater reef chemistry. A freshwater-specific phosphate test is a better fit for planted or community tanks.\u003c\/p\u003e\u003ch4\u003eWhat phosphate reading should I be aiming for?\u003c\/h4\u003e\u003cp\u003eIt depends on the system — see the target range table above. A mixed reef sits higher than an SPS-dominant or ultra-low-nutrient system.\u003c\/p\u003e\u003ch4\u003eWhy does my phosphate reading not match my nitrate reading?\u003c\/h4\u003e\u003cp\u003ePhosphate and nitrate don't always move together — test both, since Red Sea's nutrient control approach reads the two side by side rather than in isolation.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774152331555,"sku":"RED254","price":90.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/red-sea-phosphate-pro-testin-43876663197987.webp?v=1790239001","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/red-sea-phosphate-pro-testing-kit-100-tests","provider":"Nicks AOT","version":"1.0","type":"link"}