For Sale UK

Fluval 4 aquarium filter

4

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

Home / Tool Accessories / Fluval 4 aquarium filter refurbished & used for sale | For Sale UK
Fluval new series - new, u-series

Fluval new series - new, u-series

£54.99
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Fluval 107 207 307 407 - , fx

Fluval 107 207 307 407 - , fx

£247.99
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Fluval fx4 external canister - fx4,

Fluval fx4 external canister - fx4,

£247.99
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Compatible fluval 65g - 65g, biomax

Compatible fluval 65g - 65g, biomax

£14.99
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Fluval internal aquarium - internal,

Fluval internal aquarium - internal,

£29.99
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Fluval external filter 107 - filter,

Fluval external filter 107 - filter,

£109.99
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Fluval spray bar - fluval,

Fluval spray bar - fluval,

£22.99
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Fluval fx4 canister filter - fx4,

Fluval fx4 canister filter - fx4,

£156.70
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Fluval mini u3 u4 - fluval, mini,u1,u2,u3,u4

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

£29.99
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Compatible polymax - x,

Compatible polymax - x,

£6.99
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Compatible polymax - 8, x

Compatible polymax - 8, x

£10.49
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Compatible foam filter - compatible,

Compatible foam filter - compatible,

£2.99
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Fluval compatible foam - x,

Fluval compatible foam - x,

£4.99
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Compatible foam filter - x,

Compatible foam filter - x,

£5.99
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Compatible fluval polymax - compatible,

Compatible fluval polymax - compatible,

£5.99
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Compatible foam filter pads - compatible,

Compatible foam filter pads - compatible,

£3.99
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Fluval series internal - fluval,

Fluval series internal - fluval,

£22.89
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Fluval provac pads - fluval,

Fluval provac pads - fluval,

£7.49
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Fluval new series - fluval, u-series

Fluval new series - fluval, u-series

£29.99
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Fluval fx4 fx5 - fluval,

Fluval fx4 fx5 - fluval,

£18.50
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Fluval filter media - fluval,

Fluval filter media - fluval,

£9.25
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Fluval poly max - u2, u3

Fluval poly max - u2, u3

£11.49
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Compatible polycarbon - x,

Compatible polycarbon - x,

£6.99
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Fluval bio fix - 5l, biological

Fluval bio fix - 5l, biological

£30.99
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Fluval aquarium filter u3 - filter, u2

Fluval aquarium filter u3 - filter, u2

£8.95
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Compatible foam filter - compatible,

Compatible foam filter - compatible,

£3.49
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Compatible polymax - 12,

Compatible polymax - 12,

£13.99
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Compatible polycarbon - 8, x

Compatible polycarbon - 8, x

£10.49
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Compatible fluval chi - x,

Compatible fluval chi - x,

£7.99
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Fluval external aquarium - fluval,

Fluval external aquarium - fluval,

£224.99
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Compatible polycarbon - compatible,

Compatible polycarbon - compatible,

£5.99
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Compatible foam filter - 4,

Compatible foam filter - 4,

£5.49
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Fluval u4 filter - u1, u3

Fluval u4 filter - u1, u3

£6.95
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Fluval fx4 aquarium filter - fx4,

Fluval fx4 aquarium filter - fx4,

£37.69
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Compatible foam filter - 4, x

Compatible foam filter - 4, x

£4.99
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Fluval filter media value - fluval,

Fluval filter media value - fluval,

£18.99
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Fluval betta poly carb - fluval, poly-carb

Fluval betta poly carb - fluval, poly-carb

£6.79
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Fluval biomax ceramic - u3,

Fluval biomax ceramic - u3,

£8.99
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Fluval fx4 fx5 - fx4, fx6

Fluval fx4 fx5 - fx4, fx6

£21.50
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Fluval internal aquarium - u4,

Fluval internal aquarium - u4,

£73.49
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Spray bar nozzle for - spray,

Spray bar nozzle for - spray,

£7.99
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Fluval edge replacement biomax - edge,

Fluval edge replacement biomax - edge,

£13.45
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Compatible foam filter - foam,

Compatible foam filter - foam,

£5.49
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Fluval mini u3 - mini, u1

Fluval mini u3 - mini, u1

£60.49
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Fluval brackets - fluval,

Fluval brackets - fluval,

£14.99
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4xpcs pre filter sponge foam - 4xpcs,

4xpcs pre filter sponge foam - 4xpcs,

£4.04
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Fluval series u3 u4 - series, u1

Fluval series u3 u4 - series, u1

£29.99
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Fluval aquarium fish tank - fish,

Fluval aquarium fish tank - fish,

£14.99
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Fluval mini u3 u4 - u2,,

Fluval mini u3 u4 - u2,,

£9.95
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Fluval underwater internel - fluval,

Fluval underwater internel - fluval,

£73.49
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Fluval filter media - u2, u4

Fluval filter media - u2, u4

£22.99
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Fluval external filter - fluval,

Fluval external filter - fluval,

£4.90
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Fluval external filter 107 207 - fluval,

Fluval external filter 107 207 - fluval,

£159.99
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Fluval spray bar kit - spray,

Fluval spray bar kit - spray,

£23.45
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Fluval compatible foam - fluval,

Fluval compatible foam - fluval,

£4.99
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Fluval polycarbon filter - u3,

Fluval polycarbon filter - u3,

£5.44
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Fluval filter media foam - fluval, u4

Fluval filter media foam - fluval, u4

£22.99
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Fluval filter media foam - u,

Fluval filter media foam - u,

£18.99
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Fluval poly clearmax - u3,

Fluval poly clearmax - u3,

£11.45
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Fluval biolife fish tank - fluval,

Fluval biolife fish tank - fluval,

£7.99
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Fluval spec stage - spec,

Fluval spec stage - spec,

£7.75
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Fluval phosphate remover media - phosphate,

Fluval phosphate remover media - phosphate,

£12.90
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Fluval marina i25 i110 i160 - i25,

Fluval marina i25 i110 i160 - i25,

£6.12
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Compatible fluval chi - x,

Compatible fluval chi - x,

£4.99
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Fluval fx4 canister filter - canister,

Fluval fx4 canister filter - canister,

£247.99
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Fluval spray bar - bar, kit

Fluval spray bar - bar, kit

£23.39
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Fluval compatible foam - 4, x

Fluval compatible foam - 4, x

£3.99
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Compatible polycarbon - 4,

Compatible polycarbon - 4,

£6.49
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Fluval fx4 fx5 - fx6, aquastop

Fluval fx4 fx5 - fx6, aquastop

£26.99
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Compatible polymax - 4,

Compatible polymax - 4,

£6.49
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Filter bracket for fluval - bracket, u4

Filter bracket for fluval - bracket, u4

£13.45
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Fluval filter mini u3 - fluval,

Fluval filter mini u3 - fluval,

£29.99
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Fluval poly carb carbon - u4,

Fluval poly carb carbon - u4,

£22.99
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Genuine fluval fx4 - fluval, fx2

Genuine fluval fx4 - fluval, fx2

£43.95
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Fluval mini u3 u4 - fluval, mini,u1,u2,u3,u4

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

£29.99
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Fluval new series - new, u-series

Fluval new series - new, u-series

£10.65
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Fluval aquarium provac dual - fluval,

Fluval aquarium provac dual - fluval,

£6.19
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Fluval 107 207 307 - , fx6

Fluval 107 207 307 - , fx6

£159.99
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Fluval fx4 fx5 fx6 - fx4, aquastop

Fluval fx4 fx5 fx6 - fx4, aquastop

£22.50
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Fluval bio foam aquarium - foam,

Fluval bio foam aquarium - foam,

£6.45
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Fluval filter media - fluval,

Fluval filter media - fluval,

£9.49
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Pre filter sponge - foam, for

Pre filter sponge - foam, for

£3.59
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Fluval fx2 fx4 - fluval, fx2/fx4/fx5/fx6

Fluval fx2 fx4 - fluval, fx2/fx4/fx5/fx6

£13.59
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Fluval external power filter - external,

Fluval external power filter - external,

£247.99
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Fluval 307 external - 307,

Fluval 307 external - 307,

£159.99
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Fluval filter media foam - filter,

Fluval filter media foam - filter,

£21.50
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Fluval internal aquarium - u4,

Fluval internal aquarium - u4,

£72.99
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Fluval spare impeller u3 - fluval,

Fluval spare impeller u3 - fluval,

£21.99
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Fluval external aquarium - external,

Fluval external aquarium - external,

£7.49
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Fluval fx4 fx5 - fx4,

Fluval fx4 fx5 - fx4,

£14.29
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Fluval external filter media - fluval,

Fluval external filter media - fluval,

£11.79
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Fluval uvc uv aquarium - 6w,

Fluval uvc uv aquarium - 6w,

£104.99
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Fluval fx2 fx4 fx5 fx6 - fluval, fx2/fx4/fx5/fx6

Fluval fx2 fx4 fx5 fx6 - fluval, fx2/fx4/fx5/fx6

£26.39
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Fluval edge bio filter foam - edge,

Fluval edge bio filter foam - edge,

£8.75
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Fluval fx4 external aquarium - fluval,

Fluval fx4 external aquarium - fluval,

£247.99
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Aquarium media kits - aquarium,

Aquarium media kits - aquarium,

£98.39
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📊96 listings · from £2.99 · avg £39.98
⚠️ These listings were last updated more than 16 days ago. Search for fresh listings

Browse 96 fluval 4 aquarium filter listings currently in our index. Prices range from £2.99 to £247.99, with an average of £39.98. 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 →

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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 £247.99 — giving you a wide budget spread to work with. The average price of £39.98 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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