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Fluval 4 aquarium filter

4

Fluval 4 aquarium filter for sale on Ireland's largest auction and classifieds sites

Home / Fish & Aquarium / Fluval 4 aquarium filter refurbished & used for sale | For Sale UK
Fluval 307 external filter - fluval,

Fluval 307 external filter - fluval,

£159.99 · Buy It Now

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Fluval 107 207 - 307, fx

Fluval 107 207 - 307, fx

£159.99 · Buy It Now

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Fluval mini u3 u4 - fluval, mini,u1,u2,u3,u4

Fluval mini u3 u4 - fluval, mini,u1,u2,u3,u4

£73.49 · Buy It Now

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Fluval external aquarium - fluval,

Fluval external aquarium - fluval,

£224.99 · Buy It Now

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Fluval internal aquarium - fluval,

Fluval internal aquarium - fluval,

£73.49 · Buy It Now

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Fluval external filter - external, 107

Fluval external filter - external, 107

£247.99 · Buy It Now

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Fluval mini u3 u4 - u3,,

Fluval mini u3 u4 - u3,,

£73.49 · Buy It Now

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Fluval underwater aquarium - fluval,

Fluval underwater aquarium - fluval,

£49.99 · Buy It Now

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Fluval edge replacement biomax - fluval,

Fluval edge replacement biomax - fluval,

£12.75 · Buy It Now

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Fluval external filter 107 - external,

Fluval external filter 107 - external,

£115.00 · Buy It Now

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Fluval aquarium filter - fluval, u3

Fluval aquarium filter - fluval, u3

£7.65 · Buy It Now

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Fluval fx4 canister - canister, filter

Fluval fx4 canister - canister, filter

£229.49 · Buy It Now

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Fluval new series - fluval, u-series

Fluval new series - fluval, u-series

£64.99 · Buy It Now

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Fluval fx4 external canister - fluval,

Fluval fx4 external canister - fluval,

£247.99 · Buy It Now

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Compatible fluval polymax - u2,

Compatible fluval polymax - u2,

£5.99 · Buy It Now

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Compatible polycarbon - 4,

Compatible polycarbon - 4,

£6.99 · Buy It Now

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Fluval fx4 external canister - external,

Fluval fx4 external canister - external,

£259.08 · Buy It Now

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Fluval aquarium fish tank fx4 - fluval,

Fluval aquarium fish tank fx4 - fluval,

£13.99 · Buy It Now

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Fluval filter spray - filter,

Fluval filter spray - filter,

£22.99 · Buy It Now

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Fluval filter media - filter,

Fluval filter media - filter,

£9.25 · Buy It Now

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Compatible polymax - x,

Compatible polymax - x,

£6.99 · Buy It Now

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Compatible foam filter pads - compatible,

Compatible foam filter pads - compatible,

£3.49 · Buy It Now

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Fluval new series - new, u-series

Fluval new series - new, u-series

£29.99 · Buy It Now

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Fluval provac filter cartridge - fluval,

Fluval provac filter cartridge - fluval,

£8.43 · Buy It Now

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Fluval compatible foam - 4,

Fluval compatible foam - 4,

£3.99 · Buy It Now

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Fluval series internal - u,

Fluval series internal - u,

£22.89 · Buy It Now

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Compatible foam filter - compatible,

Compatible foam filter - compatible,

£5.99 · Buy It Now

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Fluval poly clearmax - fluval, u2

Fluval poly clearmax - fluval, u2

£7.45 · Buy It Now

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Fluval external filter with - fluval,

Fluval external filter with - fluval,

£159.99 · Buy It Now

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Fluval external filter 107 207 - external,

Fluval external filter 107 207 - external,

£159.99 · Buy It Now

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Fluval 307 external - external, power

Fluval 307 external - external, power

£159.99 · Buy It Now

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Fluval fx4 external aquarium - fx4,

Fluval fx4 external aquarium - fx4,

£247.99 · Buy It Now

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Compatible foam filter pads - compatible,

Compatible foam filter pads - compatible,

£3.99 · Buy It Now

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Fluval filter mini - fluval, u2

Fluval filter mini - fluval, u2

£7.99 · Buy It Now

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Fluval bio fix - fluval,

Fluval bio fix - fluval,

£28.99 · Buy It Now

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Fluval u4 filter - fluval, u3

Fluval u4 filter - fluval, u3

£36.99 · Buy It Now

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Compatible foam filter - 4,

Compatible foam filter - 4,

£5.49 · Buy It Now

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Fluval fx4 fx5 fx6 external - fluval,

Fluval fx4 fx5 fx6 external - fluval,

£18.50 · Buy It Now

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Fluval external power - fluval, filter

Fluval external power - fluval, filter

£247.99 · Buy It Now

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Compatible polymax - 12,

Compatible polymax - 12,

£13.99 · Buy It Now

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Spray bar nozzle for - bar, fluval

Spray bar nozzle for - bar, fluval

£7.99 · Buy It Now

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Compatible foam filter - x,

Compatible foam filter - x,

£4.99 · Buy It Now

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Fluval mini u3 u4 - mini, u1

Fluval mini u3 u4 - mini, u1

£73.49 · Buy It Now

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Fluval filter media - media, foam

Fluval filter media - media, foam

£18.99 · Buy It Now

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Fluval compatible foam - fluval,

Fluval compatible foam - fluval,

£4.99 · Buy It Now

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Fluval provac pads aquarium - fluval,

Fluval provac pads aquarium - fluval,

£7.49 · Buy It Now

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Compatible polycarbon - compatible,

Compatible polycarbon - compatible,

£6.49 · Buy It Now

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Fluval filter media value - fluval,

Fluval filter media value - fluval,

£18.40 · Buy It Now

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Fluval external filter 107 - filter,

Fluval external filter 107 - filter,

£124.99 · Buy It Now

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Fluval compatible foam - 4,

Fluval compatible foam - 4,

£4.99 · Buy It Now

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Fluval 107 207 307 407 - , fx6

Fluval 107 207 307 407 - , fx6

£109.99 · Buy It Now

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Fluval mini u3 - fluval, mini,u1,u2,u3,u4

Fluval mini u3 - fluval, mini,u1,u2,u3,u4

£21.99 · Buy It Now

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Compatible foam filter - 4,

Compatible foam filter - 4,

£9.49 · Buy It Now

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Fluval marina i25 i110 - fluval,

Fluval marina i25 i110 - fluval,

£6.12 · Buy It Now

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Fluval fx4 external 1000l - fx4,

Fluval fx4 external 1000l - fx4,

£156.70 · Buy It Now

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Fluval biolife fish - biolife, tank

Fluval biolife fish - biolife, tank

£6.95 · Buy It Now

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Compatible fluval chi - x,

Compatible fluval chi - x,

£7.99 · Buy It Now

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Fluval biomax ceramic - u3, u4

Fluval biomax ceramic - u3, u4

£8.99 · Buy It Now

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Compatible foam filter - 4, x

Compatible foam filter - 4, x

£2.99 · Buy It Now

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Compatible foam filter - foam,

Compatible foam filter - foam,

£5.49 · Buy It Now

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Fluval external canister - fluval,

Fluval external canister - fluval,

£305.99 · Buy It Now

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Fluval new internal - new, u4

Fluval new internal - new, u4

£73.49 · Buy It Now

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Fluval filter media - filter,

Fluval filter media - filter,

£8.99 · Buy It Now

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Fluval filter media foam - fluval,

Fluval filter media foam - fluval,

£20.99 · Buy It Now

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Fluval poly carb carbon - fluval,

Fluval poly carb carbon - fluval,

£22.99 · Buy It Now

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Compatible polycarbon - 8,

Compatible polycarbon - 8,

£10.49 · Buy It Now

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Fluval external filter - fluval,

Fluval external filter - fluval,

£11.49 · Buy It Now

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Filter bracket for fluval - for,

Filter bracket for fluval - for,

£13.45 · Buy It Now

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Fluval spare impeller u3 - u1, u2

Fluval spare impeller u3 - u1, u2

£21.99 · Buy It Now

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Fluval external aquarium fish - aquarium,

Fluval external aquarium fish - aquarium,

£7.49 · Buy It Now

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Fluval carbon foam - carbon,

Fluval carbon foam - carbon,

£15.98 · Buy It Now

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Fluval series u3 u4 - u,

Fluval series u3 u4 - u,

£29.99 · Buy It Now

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Fluval series fx4 fx5 fx6 - fluval,

Fluval series fx4 fx5 fx6 - fluval,

£12.99 · Buy It Now

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Fluval aquarium provac dual - aquarium,

Fluval aquarium provac dual - aquarium,

£6.19 · Buy It Now

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Fluval fx4 aquarium filter - fx4,

Fluval fx4 aquarium filter - fx4,

£37.69 · Buy It Now

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Compatible polycarbon - x,

Compatible polycarbon - x,

£5.99 · Buy It Now

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Fluval edge media pre - fluval,

Fluval edge media pre - fluval,

£8.75 · Buy It Now

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Fluval fx4 canister - fx4, filter

Fluval fx4 canister - fx4, filter

£247.99 · Buy It Now

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Fluval phosphate remover media - remover,

Fluval phosphate remover media - remover,

£12.90 · Buy It Now

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Fluval internal submersible - internal,

Fluval internal submersible - internal,

£73.49 · Buy It Now

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Fluval biomax rings - rings, 500g

Fluval biomax rings - rings, 500g

£12.99 · Buy It Now

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Fluval fx4 fx5 fx6 - fluval, aquarium

Fluval fx4 fx5 fx6 - fluval, aquarium

£17.69 · Buy It Now

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Fluval fx4 fx5 fx6 aquastop - fx4,

Fluval fx4 fx5 fx6 aquastop - fx4,

£25.30 · Buy It Now

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Fluval fx4 fx5 - fluval,

Fluval fx4 fx5 - fluval,

£13.89 · Buy It Now

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Compatible foam filter - compatible,

Compatible foam filter - compatible,

£9.49 · Buy It Now

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Fluval spray bar - spray,

Fluval spray bar - spray,

£23.39 · Buy It Now

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Fluval brackets - fluval, u4

Fluval brackets - fluval, u4

£14.99 · Buy It Now

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Fluval u4 clearmax - fluval, u2

Fluval u4 clearmax - fluval, u2

£6.60 · Buy It Now

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Fluval provac powered aquarium - fluval,

Fluval provac powered aquarium - fluval,

£10.29 · Buy It Now

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Fluval spray bar kit for - fluval,

Fluval spray bar kit for - fluval,

£23.45 · Buy It Now

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Fluval poly max - u3, poly-max

Fluval poly max - u3, poly-max

£10.99 · Buy It Now

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Fluval filter media - fluval,

Fluval filter media - fluval,

£19.99 · Buy It Now

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Fluval filter internal - fluval,

Fluval filter internal - fluval,

£60.49 · Buy It Now

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Fluval spec stage a1377 - 2,

Fluval spec stage a1377 - 2,

£7.75 · Buy It Now

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Fluval 307 external aquarium - external,

Fluval 307 external aquarium - external,

£159.99 · Buy It Now

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Compatible fluval 65g biomax - fluval,

Compatible fluval 65g biomax - fluval,

£14.99 · Buy It Now

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📊96 listings · from £2.99 · avg £54.5
⚠️ These listings were last updated more than 21 days ago. Search for fresh listings

Browse 96 fluval 4 aquarium filter listings currently in our index. Prices range from £2.99 to £305.99, with an average of £54.5. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about fluval 4 aquarium filter →

Try this: juwel aquarium | juwel rio | juwel trigon 190 | koi fish | large aquarium fish tank | malawi cichlid food | pleco | tropical catfish | v2 protein skimmer | jbl proflora

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Everything you need to know about fluval 4 aquarium filter

Whether you are looking for a brand-new or second-hand fluval 4 aquarium filter, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £2.99, while premium listings can reach £305.99 — giving you a wide budget spread to work with. The average price of £54.5 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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