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Fluval 4

4

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Home / Fish & Aquarium / Fluval 4 refurbished & used for sale | For Sale UK
Fluval mini u3 u4 - fluval, mini,u1,u2,u3,u4

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

£29.99 · Buy It Now

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Compatible filter media - compatible,

Compatible filter media - compatible,

£4.99 · 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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170g compatible biomax for - 170g,

170g compatible biomax for - 170g,

£5.99 · Buy It Now

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Fluval external filter 107 207 - filter,

Fluval external filter 107 207 - filter,

£247.99 · Buy It Now

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Fluval mini u3 - fluval, u2,

Fluval mini u3 - fluval, u2,

£73.49 · Buy It Now

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Fluval filter media - fluval, u1

Fluval filter media - fluval, u1

£7.19 · Buy It Now

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Fluval plus compatible - fluval,

Fluval plus compatible - fluval,

£5.49 · Buy It Now

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Fluval reef nano - 4.0, light

Fluval reef nano - 4.0, light

£99.99 · Buy It Now

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Compatible fluval u4 - 4, foam

Compatible fluval u4 - 4, foam

£10.49 · Buy It Now

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Fluval filter shrimp - filter, intake

Fluval filter shrimp - filter, intake

£14.99 · Buy It Now

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Fluval replacement parts - replacement,

Fluval replacement parts - replacement,

£199.99 · Buy It Now

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Compatible fluval - compatible, u4

Compatible fluval - compatible, u4

£6.99 · Buy It Now

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Fluval external aquarium - fluval,

Fluval external aquarium - fluval,

£224.99 · Buy It Now

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Compatible fluval bio foam max - compatible, bio-foam

Compatible fluval bio foam max - compatible, bio-foam

£6.99 · Buy It Now

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Compatible carbon impregnated - carbon,

Compatible carbon impregnated - carbon,

£7.99 · Buy It Now

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Fluval led plant - 4.0, light

Fluval led plant - 4.0, light

£179.99 · Buy It Now

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Fluval spare parts genuine - fluval,

Fluval spare parts genuine - fluval,

£13.45 · Buy It Now

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Fluval new series - fluval,

Fluval new series - fluval,

£73.49 · Buy It Now

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Fluval new series - fluval,

Fluval new series - fluval,

£42.99 · Buy It Now

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Fluval flex lighting - fluval,

Fluval flex lighting - fluval,

£9.60 · Buy It Now

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Fluval uvc line - fluval, in-line

Fluval uvc line - fluval, in-line

£95.99 · Buy It Now

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Fluval fx4 fx5 - fx4,

Fluval fx4 fx5 - fx4,

£5.99 · Buy It Now

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Fluval plant nano led - nano,

Fluval plant nano led - nano,

£96.95 · Buy It Now

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Fluval filter media 6 - u2,

Fluval filter media 6 - u2,

£18.99 · Buy It Now

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Fluval 307 external filter - fluval,

Fluval 307 external filter - fluval,

£159.99 · Buy It Now

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Compatible fluval u3 foam - 4,

Compatible fluval u3 foam - 4,

£13.49 · Buy It Now

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Fluval brackets - u2, u3

Fluval brackets - u2, u3

£6.95 · Buy It Now

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Fluval 107 207 - , 307

Fluval 107 207 - , 307

£247.99 · Buy It Now

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Fluval external filter with - external,

Fluval external filter with - external,

£159.99 · Buy It Now

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Compatible fluval clean - compatible,

Compatible fluval clean - compatible,

£18.99 · Buy It Now

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Fluval fx4 canister filter - fluval,

Fluval fx4 canister filter - fluval,

£229.49 · Buy It Now

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Fluval bio fix biological - fluval,

Fluval bio fix biological - fluval,

£28.99 · Buy It Now

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Foam sponge filter pads - filter,

Foam sponge filter pads - filter,

£12.99 · Buy It Now

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Fluval filtration media - fluval,

Fluval filtration media - fluval,

£11.25 · Buy It Now

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Compatible poly filter - x,

Compatible poly filter - x,

£5.99 · Buy It Now

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Compatible foam filter - compatible,

Compatible foam filter - compatible,

£4.49 · Buy It Now

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Compatible filter media - compatible,

Compatible filter media - compatible,

£35.99 · Buy It Now

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Reef print random - random, flow

Reef print random - random, flow

£12.45 · Buy It Now

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Compatible fluval - compatible,

Compatible fluval - compatible,

£6.49 · Buy It Now

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Fluval fx4 fx5 fx6 canister - fx4,

Fluval fx4 fx5 fx6 canister - fx4,

£10.50 · Buy It Now

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Compatible fluval clean - compatible,

Compatible fluval clean - compatible,

£5.49 · Buy It Now

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Fluval poly carbon filter - carbon,

Fluval poly carbon filter - carbon,

£7.70 · Buy It Now

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Fluval fx4 fx5 fx6 - fx4, canister

Fluval fx4 fx5 fx6 - fx4, canister

£16.00 · Buy It Now

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Fluval u4 filter - fluval,

Fluval u4 filter - fluval,

£7.99 · Buy It Now

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Fluval filter spray - filter, bar

Fluval filter spray - filter, bar

£22.99 · Buy It Now

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Fluval spec stage a1377 - fluval,

Fluval spec stage a1377 - fluval,

£7.45 · Buy It Now

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Fluval ribbed hose - fluval,

Fluval ribbed hose - fluval,

£24.99 · Buy It Now

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Fluval spec flex biomax - spec/flex, &

Fluval spec flex biomax - spec/flex, &

£10.95 · Buy It Now

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Fluval quick clear 120ml - quick,

Fluval quick clear 120ml - quick,

£9.45 · Buy It Now

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Compatible fluval u2 foam - x,

Compatible fluval u2 foam - x,

£8.49 · Buy It Now

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Fluval 204 205 206 - fluval, 204/205/206/304/305/306

Fluval 204 205 206 - fluval, 204/205/206/304/305/306

£5.49 · Buy It Now

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Fluval spec flex filter - &,

Fluval spec flex filter - &,

£7.45 · Buy It Now

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Out front adjustable spray - in,

Out front adjustable spray - in,

£10.00 · Buy It Now

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Fluval fx4 fx5 fx6 - fx4/fx5/fx6, rim

Fluval fx4 fx5 fx6 - fx4/fx5/fx6, rim

£10.65 · Buy It Now

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Fluval fx4 fx5 - fx4, aquastop

Fluval fx4 fx5 - fx4, aquastop

£25.30 · Buy It Now

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Fluval fx4 filter service kit - fluval,

Fluval fx4 filter service kit - fluval,

£114.75 · Buy It Now

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Fluval spare parts genuine - spare,

Fluval spare parts genuine - spare,

£16.49 · Buy It Now

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Fluval betta poly - fluval,

Fluval betta poly - fluval,

£9.99 · Buy It Now

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Fluval clearmax 300g - 300g, (3x100g)

Fluval clearmax 300g - 300g, (3x100g)

£11.29 · Buy It Now

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Fluval poly clearmax - fluval,

Fluval poly clearmax - fluval,

£7.45 · Buy It Now

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Fluval external filter 107 - filter,

Fluval external filter 107 - filter,

£159.99 · Buy It Now

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Fluval filter media - fluval, value

Fluval filter media - fluval, value

£18.40 · Buy It Now

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Compatible fluval u4 foam - u4,

Compatible fluval u4 foam - u4,

£13.99 · Buy It Now

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Fluval foams filter - fluval,

Fluval foams filter - fluval,

£3.99 · Buy It Now

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Aquarium holiday food fluval - holiday,

Aquarium holiday food fluval - holiday,

£3.95 · Buy It Now

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Fluval fx4 motor - fx4,

Fluval fx4 motor - fx4,

£114.75 · Buy It Now

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Fluval clearmax - clearmax, (3

Fluval clearmax - clearmax, (3

£10.83 · Buy It Now

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Compatible polycarbon - x,

Compatible polycarbon - x,

£6.99 · Buy It Now

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Fluval pre filter media rings - fluval,

Fluval pre filter media rings - fluval,

£11.95 · Buy It Now

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Compatible fluval u4 - fluval,

Compatible fluval u4 - fluval,

£14.49 · Buy It Now

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Fluval spec flex carbon - fluval,

Fluval spec flex carbon - fluval,

£6.86 · Buy It Now

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Fluval series internal - u,

Fluval series internal - u,

£73.49 · Buy It Now

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Fluval fx4 fx5 - fluval, top

Fluval fx4 fx5 - fluval, top

£4.50 · Buy It Now

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Fluval aquarium fish - fish, tank

Fluval aquarium fish - fish, tank

£13.99 · Buy It Now

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

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

£14.99 · Buy It Now

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Compatible fluval u2 - 4, foam

Compatible fluval u2 - 4, foam

£8.99 · Buy It Now

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Fluval internal filter - fluval,

Fluval internal filter - fluval,

£65.90 · Buy It Now

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Fluval spec stage biomax 42g - stage,

Fluval spec stage biomax 42g - stage,

£6.99 · Buy It Now

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Compatible with fluval plus - compatible,

Compatible with fluval plus - compatible,

£4.99 · Buy It Now

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Fluval fx4 canister filter - fx4,

Fluval fx4 canister filter - fx4,

£247.99 · Buy It Now

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Fluval bio biological - 2l,

Fluval bio biological - 2l,

£17.32 · Buy It Now

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Fluval fx4 fx5 fx6 - fx4/fx5/fx6, rubber

Fluval fx4 fx5 fx6 - fx4/fx5/fx6, rubber

£9.95 · Buy It Now

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Compatible fluval u4 - x,

Compatible fluval u4 - x,

£19.49 · Buy It Now

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Fluval provac pads - fluval,

Fluval provac pads - fluval,

£7.49 · Buy It Now

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Spray bar for fluval - spray,

Spray bar for fluval - spray,

£16.64 · Buy It Now

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Fluval clearmax 300g - fluval,

Fluval clearmax 300g - fluval,

£11.25 · Buy It Now

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Fluval led reef ip67 light - fluval,

Fluval led reef ip67 light - fluval,

£149.99 · Buy It Now

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Fluval biomax ceramic - fluval,

Fluval biomax ceramic - fluval,

£8.99 · Buy It Now

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Fluval plant nano aquarium - nano,

Fluval plant nano aquarium - nano,

£98.59 · Buy It Now

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Compatible fluval u3 foam - fluval,

Compatible fluval u3 foam - fluval,

£9.49 · Buy It Now

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Fluval aquaplus 250ml - aquaplus, 1l

Fluval aquaplus 250ml - aquaplus, 1l

£22.99 · Buy It Now

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Compatible foam filter - 4,

Compatible foam filter - 4,

£4.99 · Buy It Now

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Fluval quick clear clears - fluval,

Fluval quick clear clears - fluval,

£10.49 · Buy It Now

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Compatible fluval fx2 fx4 fx5 - compatible,

Compatible fluval fx2 fx4 fx5 - compatible,

£7.99 · Buy It Now

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Fluval roma 240l - fluval, aquarium

Fluval roma 240l - fluval, aquarium

£213.90 · Buy It Now

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📊96 listings · from £3.95 · avg £46.43
⚠️ These listings were last updated more than 13 days ago. Search for fresh listings

Browse 96 fluval 4 listings currently in our index. Prices range from £3.95 to £247.99, with an average of £46.43. 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 →

Try this: marina fish tanks | marine protein skimmer | aquatic plants | dennerle | nitrate filter | montipora | aquarium wood | fluval u4 filter | aquael | tropical snails

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Everything you need to know about fluval 4

Whether you are looking for a brand-new or second-hand fluval 4, 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 £3.95, while premium listings can reach £247.99 — giving you a wide budget spread to work with. The average price of £46.43 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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