For Sale UK

Fluval u3 filter

4

Fluval u3 filter for sale on largest auction and classifieds sites

Home / Miscellaneous Electronics / Fluval u3 filter for sale – 96 used, around £17 | For Sale UK
Fluval filter media - u3, 6

Fluval filter media - u3, 6

£18.40
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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 filter media - filter, for

Compatible filter media - filter, for

£7.99
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Fluval internal aquarium - u2,

Fluval internal aquarium - u2,

£26.70
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Fluval mini u3 u4 - u2,, u3,

Fluval mini u3 u4 - u2,, u3,

£60.49
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Compatible fluval - compatible, u3

Compatible fluval - compatible, u3

£9.99
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Compatible polycarbon - 8, x

Compatible polycarbon - 8, x

£9.99
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Fluval aquarium filter - fluval,

Fluval aquarium filter - fluval,

£21.49
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Fluval series internal - u,

Fluval series internal - u,

£22.89
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Compatible fluval u3 - 4,

Compatible fluval u3 - 4,

£9.49
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Fluval clean clear - clean,

Fluval clean clear - clean,

£13.99
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Fluval poly carbon - fluval,

Fluval poly carbon - fluval,

£7.25
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Fluval internal power - fluval, u3

Fluval internal power - fluval, u3

£8.47
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Fluval internal aquarium - fluval,

Fluval internal aquarium - fluval,

£20.43
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Fluval a440 107 - a440,

Fluval a440 107 - a440,

£78.70
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Fluval internal filter - fluval,

Fluval internal filter - fluval,

£37.00
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Compatible with fluval - with, u3

Compatible with fluval - with, u3

£19.99
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Fluval internal aquarium - fluval,

Fluval internal aquarium - fluval,

£73.49
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Compatible filter media - compatible,

Compatible filter media - compatible,

£8.49
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Out front adjustable spray - out,

Out front adjustable spray - out,

£10.00
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Fluval brackets - u4, &

Fluval brackets - u4, &

£14.99
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Fluval aquarium filter u3 - filter,

Fluval aquarium filter u3 - filter,

£8.95
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Fluval internal aquarium - internal,

Fluval internal aquarium - internal,

£59.99
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Compatible fluval u3 foam - 8,

Compatible fluval u3 foam - 8,

£17.49
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Compatible fluval polymax - u3,

Compatible fluval polymax - u3,

£6.99
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Fluval clean clear - clean, &

Fluval clean clear - clean, &

£8.84
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Spray bar for fluval u3 - bar, u2

Spray bar for fluval u3 - bar, u2

£14.22
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170g compatible biomax - 170g, for

170g compatible biomax - 170g, for

£32.99
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Compatible fluval - compatible,

Compatible fluval - compatible,

£11.49
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Fluval external filter 107 207 - fluval,

Fluval external filter 107 207 - fluval,

£124.99
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Fluval 107 207 307 - , fx

Fluval 107 207 307 - , fx

£109.99
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Compatible fluval polymax - compatible,

Compatible fluval polymax - compatible,

£11.99
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Fluval filter media - fluval,

Fluval filter media - fluval,

£8.49
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Fluval internal underwater - fluval,

Fluval internal underwater - fluval,

£52.69
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Fluval new series - fluval, u-series

Fluval new series - fluval, u-series

£26.99
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Compatible fluval u3 - x,

Compatible fluval u3 - x,

£13.49
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Fluval new series - new, u-series

Fluval new series - new, u-series

£45.99
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Fluval filter media - media, value

Fluval filter media - media, value

£18.99
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Compatible polymax - x,

Compatible polymax - x,

£13.49
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Hang fluval ac110 power - fluval,

Hang fluval ac110 power - fluval,

£59.90
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Fluval poly clearmax - fluval, u4

Fluval poly clearmax - fluval, u4

£11.45
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Fluval internal underwater - fluval,

Fluval internal underwater - fluval,

£60.15
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Fluval series u3 - fluval,

Fluval series u3 - fluval,

£60.49
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Fluval filter media foam - fluval,

Fluval filter media foam - fluval,

£18.99
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Fluval spare impeller - spare,

Fluval spare impeller - spare,

£15.95
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Compatible fluval u3 foam - compatible,

Compatible fluval u3 foam - compatible,

£9.49
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Fluval series bio foam - u,

Fluval series bio foam - u,

£8.09
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Fluval u4 filter - fluval,

Fluval u4 filter - fluval,

£6.95
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Fluval poly carb carbon - fluval, poly-carb

Fluval poly carb carbon - fluval, poly-carb

£20.99
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Fluval new internal filter - fluval,

Fluval new internal filter - fluval,

£60.49
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Compatible polycarbon - 4,

Compatible polycarbon - 4,

£6.49
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Fluval media value - fluval,

Fluval media value - fluval,

£19.79
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Fluval filter foam - filter, pad

Fluval filter foam - filter, pad

£19.99
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Fluval and older 3plus - u3, new

Fluval and older 3plus - u3, new

£20.00
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Fluval series clean clear - fluval,

Fluval series clean clear - fluval,

£8.47
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Fluval underwater filter - fluval,

Fluval underwater filter - fluval,

£51.43
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Fluval internal submersible - internal,

Fluval internal submersible - internal,

£60.49
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Fluval mini u3 u4 - mini, u1

Fluval mini u3 u4 - mini, u1

£60.49
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Fluval mini u3 - fluval, mini,u1,u2,u3,u4

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

£29.99
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Spray bar nozzle for fluval - nozzle,

Spray bar nozzle for fluval - nozzle,

£9.99
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Fluval new series - fluval, u-series

Fluval new series - fluval, u-series

£73.49
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Fluval internal filter - u3,

Fluval internal filter - u3,

£13.95
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Fluval pre filter - fluval, pre-filter

Fluval pre filter - fluval, pre-filter

£5.45
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Fluval internal filter - internal,

Fluval internal filter - internal,

£68.35
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Fluval media value pack 6 - u3,

Fluval media value pack 6 - u3,

£22.74
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Fluval filter media - u3,

Fluval filter media - u3,

£22.99
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Fluval filter bracket - fluval, u3

Fluval filter bracket - fluval, u3

£13.39
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Fluval poly max - u4, poly-max

Fluval poly max - u4, poly-max

£11.99
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Fluval series poly - fluval, u

Fluval series poly - fluval, u

£8.04
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Fluval range filters mini - fluval, filters/

Fluval range filters mini - fluval, filters/

£42.99
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Compatible foam filter - compatible,

Compatible foam filter - compatible,

£5.49
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Compatible foam filter - foam,

Compatible foam filter - foam,

£8.99
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Fluval biomax ceramic - u3,

Fluval biomax ceramic - u3,

£9.45
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Fluval aqaurium filter - -, full

Fluval aqaurium filter - -, full

£60.49
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Fluval media value - u3,

Fluval media value - u3,

£22.74
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Fluval u4 filter - fluval,

Fluval u4 filter - fluval,

£9.19
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Fluval poly carbon filter - fluval,

Fluval poly carbon filter - fluval,

£8.99
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Fluval filter media - fluval,

Fluval filter media - fluval,

£8.79
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Compatible polymax - 4,

Compatible polymax - 4,

£6.49
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Compatible fluval u3 foam - x,

Compatible fluval u3 foam - x,

£17.49
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Fluval stage poly carb - stage, poly-carb

Fluval stage poly carb - stage, poly-carb

£8.76
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Fluval u4 internal - u2,

Fluval u4 internal - u2,

£15.95
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Fluval filter media foam - fluval,

Fluval filter media foam - fluval,

£18.99
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Ltwhome carbon foam - ltwhome,

Ltwhome carbon foam - ltwhome,

£14.89
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Fluval replacement poly max - u3,

Fluval replacement poly max - u3,

£9.94
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Fluval filter mini - u1, u4

Fluval filter mini - u1, u4

£60.49
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Fluval u4 internal - u2/u3/u4,

Fluval u4 internal - u2/u3/u4,

£9.72
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Fluval biomax bio media - bio, filter

Fluval biomax bio media - bio, filter

£15.04
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Fluval filter media value - fluval,

Fluval filter media value - fluval,

£24.65
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Fluval sponge foam - fluval, genuine

Fluval sponge foam - fluval, genuine

£36.99
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Compatible polymax - x,

Compatible polymax - x,

£9.99
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Fluval u4 internal - u1/u2/u3/u4,

Fluval u4 internal - u1/u2/u3/u4,

£12.99
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Fluval replacement poly - fluval, u3

Fluval replacement poly - fluval, u3

£8.42
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Fluval biomax rings aquarium - fluval,

Fluval biomax rings aquarium - fluval,

£19.90
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Fluval mini internal filter - fluval, up

Fluval mini internal filter - fluval, up

£21.89
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Fluval underwater internel - u4,

Fluval underwater internel - u4,

£73.49
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📊96 listings · from £5.45 · avg £26.27

Browse 96 fluval u3 filter listings currently in our index. Prices range from £5.45 to £124.99, with an average of £26.27. 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 u3 filter →

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Everything you need to know about fluval u3 filter

Whether you are looking for a brand-new or second-hand fluval u3 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 £5.45, while premium listings can reach £124.99 — giving you a wide budget spread to work with. The average price of £26.27 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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