For Sale UK

Fluval u4 filter

4

Fluval u4 filter for sale on Ireland's largest auction and classifieds sites

Home / Fish & Aquarium / Fluval u4 filter refurbished & used for sale | For Sale UK
Compatible filter media for - compatible,

Compatible filter media for - compatible,

£23.49 · Buy It Now

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Fluval filter media 6 - u2, u4

Fluval filter media 6 - u2, u4

£20.99 · 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

£73.49 · Buy It Now

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Fluval internal aquarium - internal,

Fluval internal aquarium - internal,

£73.49 · Buy It Now

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Fluval filter - fluval,

Fluval filter - fluval,

£16.15 · Buy It Now

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Compatible filter media - compatible,

Compatible filter media - compatible,

£23.49 · Buy It Now

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Fluval mini u3 - fluval, u4

Fluval mini u3 - fluval, u4

£23.95 · Buy It Now

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Fluval u4 filter - fluval,

Fluval u4 filter - fluval,

£36.99 · Buy It Now

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170g compatible biomax for - compatible,

170g compatible biomax for - compatible,

£28.99 · Buy It Now

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Fluval filter media - fluval, u3

Fluval filter media - fluval, u3

£15.95 · Buy It Now

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Compatible fluval u4 - compatible,

Compatible fluval u4 - compatible,

£10.49 · Buy It Now

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Fluval new series - fluval,

Fluval new series - fluval,

£29.99 · Buy It Now

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Fluval series internal - u,

Fluval series internal - u,

£22.89 · Buy It Now

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Spray bar for fluval - fluval, u3

Spray bar for fluval - fluval, u3

£16.64 · Buy It Now

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Compatible fluval - fluval, u4

Compatible fluval - fluval, u4

£6.99 · Buy It Now

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Compatible fluval u4 - x, foam

Compatible fluval u4 - x, foam

£14.49 · Buy It Now

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Out front adjustable - front, spray

Out front adjustable - front, spray

£10.00 · Buy It Now

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Fluval new series - new, u-series

Fluval new series - new, u-series

£42.99 · Buy It Now

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Fluval filter media value - media,

Fluval filter media value - media,

£18.40 · Buy It Now

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Fluval poly clearmax - u2,

Fluval poly clearmax - u2,

£11.45 · Buy It Now

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Fluval filter media - filter,

Fluval filter media - filter,

£23.95 · Buy It Now

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Compatible fluval clean - compatible,

Compatible fluval clean - compatible,

£18.99 · Buy It Now

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Compatible fluval clean - clean, &

Compatible fluval clean - clean, &

£5.49 · Buy It Now

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Fluval filter media - filter,

Fluval filter media - filter,

£11.45 · Buy It Now

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Compatible with fluval - compatible,

Compatible with fluval - compatible,

£23.99 · Buy It Now

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Compatible fluval u4 - 4,

Compatible fluval u4 - 4,

£13.99 · Buy It Now

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Compatible fluval clean - fluval, &

Compatible fluval clean - fluval, &

£9.99 · Buy It Now

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Fluval poly carbon - poly, filter

Fluval poly carbon - poly, filter

£7.70 · Buy It Now

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Fluval mini u3 - u3, u4

Fluval mini u3 - u3, u4

£23.99 · Buy It Now

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Ltwhome compatible with carbon - ltwhome,

Ltwhome compatible with carbon - ltwhome,

£49.99 · Buy It Now

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Compatible polycarbon - x,

Compatible polycarbon - x,

£10.49 · Buy It Now

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Fluval underwater internel - u4,

Fluval underwater internel - u4,

£73.49 · Buy It Now

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Fluval spare impeller u3 - spare,

Fluval spare impeller u3 - spare,

£21.99 · Buy It Now

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Fluval series u3 u4 - u2,

Fluval series u3 u4 - u2,

£29.99 · Buy It Now

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Fluval brackets - u4, &

Fluval brackets - u4, &

£17.99 · Buy It Now

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Compatible polycarbon - 4, x

Compatible polycarbon - 4, x

£6.99 · Buy It Now

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Spray bar nozzle for - bar,

Spray bar nozzle for - bar,

£7.99 · Buy It Now

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Fluval filter media - fluval,

Fluval filter media - fluval,

£22.99 · Buy It Now

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Compatible fluval u4 - 12,

Compatible fluval u4 - 12,

£35.99 · Buy It Now

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Compatible polymax - 4, x

Compatible polymax - 4, x

£6.99 · Buy It Now

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Fluval filter media foam - fluval,

Fluval filter media foam - fluval,

£18.99 · 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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Fluval internal submersible - fluval,

Fluval internal submersible - fluval,

£73.49 · Buy It Now

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Compatible foam filter - x,

Compatible foam filter - x,

£5.99 · Buy It Now

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Fluval filter media foam - filter,

Fluval filter media foam - filter,

£20.99 · Buy It Now

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Fluval media value - u3,

Fluval media value - u3,

£22.90 · Buy It Now

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Filter bracket for fluval - filter,

Filter bracket for fluval - filter,

£13.45 · 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

£21.99 · Buy It Now

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Compatible fluval u4 foam - x,

Compatible fluval u4 foam - x,

£10.49 · Buy It Now

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Fluval new series - fluval, u-series

Fluval new series - fluval, u-series

£31.89 · Buy It Now

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Fluval new internal filter - new, u4

Fluval new internal filter - new, u4

£73.49 · Buy It Now

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Fluval filter bracket - fluval, u4

Fluval filter bracket - fluval, u4

£14.60 · Buy It Now

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Compatible fluval u4 - u4, foam

Compatible fluval u4 - u4, foam

£19.49 · Buy It Now

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Fluval replacement directional - fluval,

Fluval replacement directional - fluval,

£13.45 · Buy It Now

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Fluval u4 internal - u2,

Fluval u4 internal - u2,

£13.95 · Buy It Now

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Fluval internal filter - internal,

Fluval internal filter - internal,

£14.95 · Buy It Now

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Fluval carbon foam - fluval, u4

Fluval carbon foam - fluval, u4

£15.98 · Buy It Now

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Fluval filter media u3 - fluval,

Fluval filter media u3 - fluval,

£7.95 · Buy It Now

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Filter bracket for fluval - filter,

Filter bracket for fluval - filter,

£14.79 · Buy It Now

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Fluval filter carbon - filter,

Fluval filter carbon - filter,

£9.24 · Buy It Now

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Fluval poly carb - fluval, poly-carb

Fluval poly carb - fluval, poly-carb

£22.99 · Buy It Now

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Fluval u4 filter - fluval, u1/u2/u3/u4

Fluval u4 filter - fluval, u1/u2/u3/u4

£9.09 · Buy It Now

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Fluval internal filter - fluval,

Fluval internal filter - fluval,

£9.25 · Buy It Now

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Fluval u4 clearmax - u2,

Fluval u4 clearmax - u2,

£6.60 · Buy It Now

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Compatible fluval u4 foam - 8,

Compatible fluval u4 foam - 8,

£26.99 · Buy It Now

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Fluval filter media - fluval,

Fluval filter media - fluval,

£8.99 · Buy It Now

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Compatible fluval u4 foam - u4,

Compatible fluval u4 foam - u4,

£26.99 · Buy It Now

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Compatible fluval u4 - fluval, foam

Compatible fluval u4 - fluval, foam

£14.99 · Buy It Now

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Fluval aquarium internal - fluval,

Fluval aquarium internal - fluval,

£21.75 · Buy It Now

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Fluval filter mini u3 - mini, u2

Fluval filter mini u3 - mini, u2

£7.99 · Buy It Now

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Fluval poly max - fluval, u4

Fluval poly max - fluval, u4

£6.99 · Buy It Now

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Fluval aquarium filter u3 - fluval, u2

Fluval aquarium filter u3 - fluval, u2

£7.65 · Buy It Now

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Fluval filter carbon - filter,

Fluval filter carbon - filter,

£9.43 · Buy It Now

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Fluval internal filter - fluval,

Fluval internal filter - fluval,

£57.90 · Buy It Now

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Compatible fluval u4 foam - compatible,

Compatible fluval u4 foam - compatible,

£19.49 · Buy It Now

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Fluval filter carbon - filter,

Fluval filter carbon - filter,

£9.11 · Buy It Now

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Fluval biomax rings aquarium - fluval,

Fluval biomax rings aquarium - fluval,

£19.40 · Buy It Now

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Ingviee compatible carbon - ingviee,

Ingviee compatible carbon - ingviee,

£7.19 · Buy It Now

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Fluval filter clearmax - fluval, u4

Fluval filter clearmax - fluval, u4

£17.99 · Buy It Now

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Fluval internal power - u4,

Fluval internal power - u4,

£8.48 · Buy It Now

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Fluval underwater aquarium - fluval,

Fluval underwater aquarium - fluval,

£72.99 · Buy It Now

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Fluval filter media - u4,

Fluval filter media - u4,

£9.45 · Buy It Now

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Fluval series bio - bio, foam

Fluval series bio - bio, foam

£8.48 · Buy It Now

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Fluval internal filter - internal,

Fluval internal filter - internal,

£73.49 · Buy It Now

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Fluval range filters mini - filters/, mini/

Fluval range filters mini - filters/, mini/

£21.59 · Buy It Now

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Fluval filter foam pad - fluval,

Fluval filter foam pad - fluval,

£21.99 · Buy It Now

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Fluval filter carbon - fluval, u4

Fluval filter carbon - fluval, u4

£26.99 · Buy It Now

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Fluval biomax for u4 - fluval,

Fluval biomax for u4 - fluval,

£11.99 · Buy It Now

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Fluval internal filter - fluval,

Fluval internal filter - fluval,

£73.49 · Buy It Now

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Fluval filter clearmax - filter,

Fluval filter clearmax - filter,

£13.06 · Buy It Now

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Compatible fluval - fluval, u4

Compatible fluval - fluval, u4

£5.49 · Buy It Now

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Fluval media value pack - u4,

Fluval media value pack - u4,

£22.90 · Buy It Now

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Fluval u4 internal - fluval,

Fluval u4 internal - fluval,

£12.79 · Buy It Now

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Fluval underwater filter - fluval,

Fluval underwater filter - fluval,

£59.99 · Buy It Now

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Compatible polymax - x,

Compatible polymax - x,

£13.99 · Buy It Now

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Ingviee set compatible foam - ingviee, of

Ingviee set compatible foam - ingviee, of

£13.79 · Buy It Now

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📊96 listings · from £5.49 · avg £22.44

Browse 96 fluval u4 filter listings currently in our index. Prices range from £5.49 to £73.49, with an average of £22.44. 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 u4 filter →

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Everything you need to know about fluval u4 filter

Whether you are looking for a brand-new or second-hand fluval u4 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 £5.49, while premium listings can reach £73.49 — giving you a wide budget spread to work with. The average price of £22.44 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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