{"product_id":"fluval-fx-super-filter","title":"Fluval FX Super Filter","description":"\u003cp\u003e\u003cstrong\u003eOne canister range, three flow rates, sized to the tank rather than the other way round.\u003c\/strong\u003e The Fluval FX Super Filter is Fluval's high-output external canister range, sold here as the FX2, FX4 and FX6 — external canister filters rated for aquariums up to 750 L, 1000 L and 1500 L respectively. All three share the same self-priming Smart Pump, multi-stage mechanical\/biological\/chemical media and lift-out basket design; they differ in motor output, media volume and physical size. This page covers all three so you can compare them side by side rather than guess from the litres-per-hour number alone.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-priming Smart Pump\u003c\/strong\u003e — fill with water, plug in, and the pump starts itself. No manual priming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto air evacuation\u003c\/strong\u003e — trapped air is purged automatically roughly every 12 hours, so flow doesn't quietly drop off between services.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-stage filtration\u003c\/strong\u003e — mechanical, biological and chemical media included across all three sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLift-out media baskets\u003c\/strong\u003e — media stays contained and comes out as a stack rather than loose handfuls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, under-tank footprint\u003c\/strong\u003e — a similar 40 x 40 cm base across FX4 and FX6, with FX2 slightly smaller at 34 x 34 cm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and marine safe\u003c\/strong\u003e — the same range suits both, media choice permitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eFX2\u003c\/th\u003e\n\u003cth\u003eFX4\u003c\/th\u003e\n\u003cth\u003eFX6\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAquarium size\u003c\/th\u003e\n\u003ctd\u003eUp to 750 L\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 L\u003c\/td\u003e\n\u003ctd\u003eUp to 1500 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePump output (unrestricted)\u003c\/th\u003e\n\u003ctd\u003e1800 L\/h\u003c\/td\u003e\n\u003ctd\u003e2650 L\/h\u003c\/td\u003e\n\u003ctd\u003e3500 L\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFiltered circulation (media loaded)\u003c\/th\u003e\n\u003ctd\u003e1300 L\/h\u003c\/td\u003e\n\u003ctd\u003e1700 L\/h\u003c\/td\u003e\n\u003ctd\u003e2130 L\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax head height\u003c\/th\u003e\n\u003ctd\u003e2.1 m\u003c\/td\u003e\n\u003ctd\u003e2.1 m\u003c\/td\u003e\n\u003ctd\u003e3.3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWattage (120 V or 230–240 V)\u003c\/th\u003e\n\u003ctd\u003e27 W\u003c\/td\u003e\n\u003ctd\u003e30 W\u003c\/td\u003e\n\u003ctd\u003e43 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCanister volume\u003c\/th\u003e\n\u003ctd\u003e10.6 L\u003c\/td\u003e\n\u003ctd\u003e14 L\u003c\/td\u003e\n\u003ctd\u003e20 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e34 x 34 x 42 cm\u003c\/td\u003e\n\u003ctd\u003e40 x 40 x 42 cm\u003c\/td\u003e\n\u003ctd\u003e40 x 40 x 53 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eAA2955\u003c\/td\u003e\n\u003ctd\u003eAA0556\u003c\/td\u003e\n\u003ctd\u003eAA0557\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMedia basket volume is published inconsistently across the range: Fluval states 3.9 L total for the FX2 and 5.9 L for the FX6, but only lists a 3.9 L biological compartment for the FX4 rather than a total figure — we haven't published an FX4 total media volume for that reason, rather than guess at it.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance — flow against head\u003c\/h3\u003e\n\u003cp\u003eThe single litres-per-hour figure printed on the box is measured with nothing attached — no hose, no media, no lift. Two more useful numbers from Fluval's own spec sheets: the flow rate once media is loaded and water is actually being filtered, and the head height at which the pump stops moving water altogether. Fluval does not publish the intermediate points of the curve between those two figures, so we're showing what's published rather than interpolating a smooth line.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePump output, no restriction\u003c\/th\u003e\n\u003cth\u003eFiltered flow, media loaded\u003c\/th\u003e\n\u003cth\u003eFlow at max head\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX2\u003c\/td\u003e\n\u003ctd\u003e1800 L\/h\u003c\/td\u003e\n\u003ctd\u003e1300 L\/h\u003c\/td\u003e\n\u003ctd\u003e0 L\/h at 2.1 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX4\u003c\/td\u003e\n\u003ctd\u003e2650 L\/h\u003c\/td\u003e\n\u003ctd\u003e1700 L\/h\u003c\/td\u003e\n\u003ctd\u003e0 L\/h at 2.1 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX6\u003c\/td\u003e\n\u003ctd\u003e3500 L\/h\u003c\/td\u003e\n\u003ctd\u003e2130 L\/h\u003c\/td\u003e\n\u003ctd\u003e0 L\/h at 3.3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIn practice, expect actual circulation closer to the \"filtered flow, media loaded\" column once the canister is running with sump-style plumbing, elbows and a realistic lift — not the headline pump output.\u003c\/p\u003e\n\n\u003ch3\u003eWhich one do I need?\u003c\/h3\u003e\n\u003cp\u003eMatch the filter to your stocked tank volume, not just the tank's rated capacity — a heavily stocked tank benefits from sizing up.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eFX2\u003c\/th\u003e\n\u003cth\u003eFX4\u003c\/th\u003e\n\u003cth\u003eFX6\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003ctd\u003eTanks up to roughly 750 L, lightly to moderately stocked\u003c\/td\u003e\n\u003ctd\u003eTanks up to roughly 1000 L, or a smaller heavily stocked tank\u003c\/td\u003e\n\u003ctd\u003eTanks up to roughly 1500 L, or multi-tank systems needing high turnover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStep up if\u003c\/th\u003e\n\u003ctd\u003eApproaching 750 L or adding bioload\u003c\/td\u003e\n\u003ctd\u003eApproaching 1000 L or adding bioload\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cp\u003eEach size ships with the canister body, motor head, all media baskets, a full set of mechanical, chemical and biological media, intake and spray bar assemblies, and the hoses needed for a standard installation.\u003c\/p\u003e\n\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\u003cp\u003eNone of the three sizes include the FX Gravel Cleaner Kit or replacement vacuum bags — these are sold separately and only fit the FX4 and FX6 (2nd generation).\u003c\/p\u003e\n\n\u003ch3\u003eRunning costs and noise\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003cth\u003eRunning 24\/7\u003c\/th\u003e\n\u003cth\u003eIndicative annual cost*\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX2\u003c\/td\u003e\n\u003ctd\u003e27 W\u003c\/td\u003e\n\u003ctd\u003e≈236.5 kWh\/year\u003c\/td\u003e\n\u003ctd\u003e≈$70.96\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX4\u003c\/td\u003e\n\u003ctd\u003e30 W\u003c\/td\u003e\n\u003ctd\u003e≈262.8 kWh\/year\u003c\/td\u003e\n\u003ctd\u003e≈$78.84\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX6\u003c\/td\u003e\n\u003ctd\u003e43 W\u003c\/td\u003e\n\u003ctd\u003e≈376.7 kWh\/year\u003c\/td\u003e\n\u003ctd\u003e≈$113.00\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e*Calculated at 30c\/kWh assuming continuous 24-hour operation, which is how a canister filter is normally run. Fluval does not publish a decibel rating for this range, so a noise figure isn't shown here rather than estimated.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for freshwater and marine tanks within each model's rated volume, and for stands or cabinets with room for a unit up to 53 cm tall (FX6). Not suitable as the sole filtration on a heavily stocked tank near or above the top of its rated range — step up a size rather than run one filter flat out.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003e3 year limited warranty against manufacturing defects, in addition to your rights under Australian Consumer Law. 230–240 V \/ 50 Hz, Australian plug. Standard parcel freight — no special handling required.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluval FX Gravel Cleaner Kit\u003c\/strong\u003e — connects to the FX4 and FX6 utility valve for vacuum-through-filter water changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluval FX Service Kit (A20259)\u003c\/strong\u003e — impeller and seal spares for the FX5\/FX6 motor (FX6 owners only; FX4 uses different service parts).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eIs the litres-per-hour number on the box what I'll actually get?\u003c\/h4\u003e\n\u003cp\u003eNo. That figure is the unrestricted pump output with nothing attached. Once media, hoses and a realistic lift are in place, expect flow closer to the \"filtered flow, media loaded\" figure in the table above.\u003c\/p\u003e\n\u003ch4\u003eWhich size do I need for a 1000 L tank?\u003c\/h4\u003e\n\u003cp\u003eThe FX4 is rated to 1000 L. If the tank is heavily stocked, or you're running it near the top of that range, the FX6 gives more headroom.\u003c\/p\u003e\n\u003ch4\u003eCan I run this on a marine or reef tank?\u003c\/h4\u003e\n\u003cp\u003eYes, all three sizes are fresh and marine safe.\u003c\/p\u003e\n\u003ch4\u003eDoes the FX2 fit the same gravel vacuum kit as the FX4 and FX6?\u003c\/h4\u003e\n\u003cp\u003eNo. The Fluval FX Gravel Cleaner Kit is built for the FX4 and FX6 (2nd generation) utility valve only, and isn't listed as compatible with the FX2.\u003c\/p\u003e\n\u003ch4\u003eHow loud is it?\u003c\/h4\u003e\n\u003cp\u003eFluval hasn't published a decibel figure for this range, so we're not quoting one — in general, canister filters in this class run quietly under normal operation with no trapped air.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"FX2 (1800 lph)","offer_id":55249639244067,"sku":"AA2955","price":909.95,"currency_code":"AUD","in_stock":true},{"title":"FX4 (2650 lph)","offer_id":55249639276835,"sku":"AA0556","price":1149.95,"currency_code":"AUD","in_stock":true},{"title":"FX6 (3500 lph)","offer_id":55249639309603,"sku":"AA0557","price":1464.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/PF155.jpg?v=1772078367","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-fx-super-filter","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}