{"product_id":"fluval-phosphate-test-kit-75-tests","title":"Fluval Phosphate Test Kit 75 Tests","description":"\u003cp\u003e\u003cstrong\u003eA 75-test kit that tells you whether phosphate is fuelling your algae before you start guessing at fixes.\u003c\/strong\u003e The Fluval Phosphate Test Kit (Fluval part A7872) is a liquid reagent test reading 0.0–5.0 mg\/L PO₄, suitable for both freshwater and marine aquariums.\u003c\/p\u003e\u003cp\u003ePhosphate builds up from fish waste, uneaten food and decaying plant matter, and it's one of the two nutrients — alongside nitrate — that drive nuisance algae. This kit uses a colorimetric reaction: add the reagents to a water sample, wait two minutes, then match the colour against the included chart.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 tests per kit\u003c\/strong\u003e — enough for weekly testing across well over a year in a single tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.0–5.0 mg\/L range\u003c\/strong\u003e — covers everything from a clean reef tank to a heavily stocked, overdue-for-a-water-change freshwater setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquid reagent accuracy\u003c\/strong\u003e — a modified ascorbic acid colour reaction, generally more precise than dip-strip tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and marine\u003c\/strong\u003e — one kit covers both water types, so it works across a mixed collection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast read\u003c\/strong\u003e — result in 2 minutes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\u003ctd\u003eA7872\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of tests\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0.0–5.0 mg\/L PO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003eLiquid reagent colour comparison\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime to result\u003c\/td\u003e\n\u003ctd\u003e2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eReagent bottles, pipette, glass test tube, colour chart\/instruction booklet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cp\u003eThree reagent bottles, a pipette, a glass test tube and a printed colour chart with instructions. No reference\/calibration solution is included — the colour chart is the reference.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eFluval's own guidance is to expect the best results within the first year after opening; reagents can lose accuracy with age and heat, so store the kit somewhere cool and out of direct sun and check the manufacture date if a reading looks implausible.\u003c\/p\u003e\u003ch3\u003eIf your reading is high\u003c\/h3\u003e\u003cp\u003eA rising phosphate reading is usually addressed with a water change first, then ongoing chemical media if the source keeps coming back. Fluval's phosphate-removing filter pads are sized to the canister range: the \u003ca href=\"\/products\/fluval-phosphate-pads-307-407-6-pack\"\u003e306\/307\/406\/407 pack\u003c\/a\u003e is the one to reach for on that filter series; the 106\/206–107\/207 and FX2\/FX4\/FX5\/FX6 ranges use their own separate packs. Fluval ClearMax loose resin is the alternative for filters that use a media bag rather than a pad basket.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for routine monitoring in freshwater, planted and marine\/reef tanks. Not a nitrate, ammonia or pH test — those need their own kits, and phosphate alone won't diagnose an algae outbreak with more than one nutrient behind it.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eGeneral Fluval warranty terms apply to any manufacturing defect, in addition to your rights under Australian Consumer Law. Standard parcel freight.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWhat phosphate level should I be aiming for?\u003c\/h4\u003e\u003cp\u003eFluval does not publish a single target figure for every tank type in this kit's documentation, so we're not going to invent one here — as a general rule, lower is better for algae control, and the trend over several tests matters more than any single reading. If you're chasing a specific target for a reef tank, a dedicated reef-focused test kit with finer resolution may suit you better.\u003c\/p\u003e\u003ch4\u003eDoes this kit test for silicate as well?\u003c\/h4\u003e\u003cp\u003eNo, this is a phosphate-only kit. Silicate needs a separate test.\u003c\/p\u003e\u003ch4\u003eHow often should I test?\u003c\/h4\u003e\u003cp\u003eWeekly is a reasonable routine for a stable tank; test more often if you're actively treating a phosphate-driven algae problem or have just added new stock or a new light.\u003c\/p\u003e\u003ch4\u003eCan I use this on a nano or pico tank?\u003c\/h4\u003e\u003cp\u003eYes — the sample size needed is small, so it works fine on nano setups.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293302866211,"sku":"FLS54","price":35.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-phosphate-test-kit-75-43875496952099.webp?v=1790236916","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-phosphate-test-kit-75-tests","provider":"Nicks AOT","version":"1.0","type":"link"}