{"product_id":"fluval-tri-ex-absorbing-cartridge-g3","title":"Fluval Tri Ex Absorbing Cartridge G3","description":"\u003cp\u003e\u003cstrong\u003eHandles three jobs in one cartridge slot on the Fluval G3.\u003c\/strong\u003e The Tri-EX cartridge combines activated carbon with phosphate- and nitrate-removing resin in a single unit, sized for the chemical media stage of the Fluval G3 canister filter (Fluval item A423). It tackles odour, discolouration and the two nutrients that drive algae growth in one pass, without needing three separate media baskets.\u003c\/p\u003e\n\n\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\n\u003cp\u003eYes, if you run a Fluval G3 canister filter. The G3 is rated for aquariums of 150-300 L (40-80 US gal). This cartridge is sized for the G3's media basket only — it does not fit the larger Fluval G6, which takes its own Tri-EX cartridge (item A424).\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree media in one cartridge\u003c\/strong\u003e — activated carbon, phosphate-removing resin and nitrate-removing resin combined, so you're not running separate baskets for each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built for the G3\u003c\/strong\u003e — shaped to seat correctly in the G3's chemical stage, unlike generic universal carbon pads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets the causes of algae flare-ups\u003c\/strong\u003e — phosphate and nitrate removal addresses the nutrients that feed nuisance algae, not just the symptoms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-in replacement\u003c\/strong\u003e — swaps in during a normal filter service, no cutting or repacking required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eField\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eFluval G3 canister filter only — not compatible with the larger Fluval G6, which uses its own Tri-EX cartridge (item A424)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eA423\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003ctd\u003eActivated carbon, phosphate-removing resin and nitrate-removing resin combined in one 3-in-1 cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves \/ provides\u003c\/th\u003e\n\u003ctd\u003ePhosphate, nitrate, organic waste, odour and discolouration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReplacement interval\u003c\/th\u003e\n\u003ctd\u003eNot published by Fluval — check water clarity and nitrate\/phosphate test results every 4 to 6 weeks, and replace once readings stop improving after a water change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for freshwater aquariums running a Fluval G3. Not recommended for reef or invertebrate systems, where phosphate stripping needs to be more gradual and controllable — a dedicated reactor is the better tool there. It's not a substitute for the G3's separate mechanical and biological media, which still need their own regular servicing.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eFluval does not publish a fixed replacement interval for this cartridge. As a general guide, check water clarity and your nitrate\/phosphate test results every 4 to 6 weeks, and replace the cartridge once readings stop improving after a water change.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eThis is a consumable filter media, used until exhausted rather than covered under a mechanical warranty. Standard parcel delivery.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eCan I use this in a Fluval G6 instead of a G3?\u003c\/h4\u003e\n\u003cp\u003eNo. The G6 takes its own Tri-EX cartridge, item A424, sized for its larger housing. The two aren't interchangeable.\u003c\/p\u003e\n\u003ch4\u003eDo I need a separate carbon cartridge as well?\u003c\/h4\u003e\n\u003cp\u003eNo. This cartridge already includes activated carbon alongside the phosphate and nitrate resin, so a separate carbon cartridge isn't needed at the same time.\u003c\/p\u003e\n\u003ch4\u003eWill this affect phosphate dosing on a reef tank?\u003c\/h4\u003e\n\u003cp\u003eThis cartridge is intended for freshwater use. On a reef tank, faster or less predictable phosphate stripping can undo deliberate dosing — a controllable reactor media is the better choice there.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293297000739,"sku":"FG01E","price":68.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/FG01e.png?v=1782879572","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-tri-ex-absorbing-cartridge-g3","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}