Fluval 4 aquarium filter
Fluval 4 aquarium filter for sale on Ireland's largest auction and classifieds sites
Fluval mini u3 - fluval, mini,u1,u2,u3,u4 - £73.49
Fluval internal filter • Provides efficient filtration • Create superior aquarium - Free postage - New and Used
Fluval internal filter • Provides efficient filtration • Create superior aquarium - Free postage - New and Used
Fluval fx4 external canister - fluval, - £247.99
Fx4 bridges gap • Between fluval famous • 406 fx6 external - Free postage - New and Used
Fx4 bridges gap • Between fluval famous • 406 fx6 external - Free postage - New and Used
Fluval 107 207 307 - , fx - £159.99
High performance canister • New fluval external • Filter fx4 bridges - Free postage - New and Used
High performance canister • New fluval external • Filter fx4 bridges - Free postage - New and Used
Fluval fx4 canister filter - canister, - £229.49
Fluval fx4 canister • Filter high quality • External fish tank - Free postage - New and Used
Fluval fx4 canister • Filter high quality • External fish tank - Free postage - New and Used
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Fluval 307 external - fluval, filter - £159.99
Confidence from trusted • Bricks mortar store • Over years experience - Free postage - New and Used
Confidence from trusted • Bricks mortar store • Over years experience - Free postage - New and Used
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48 listings · from £3.49 · avg £79.22
Browse 48 fluval 4 aquarium filter listings currently in our index. Prices range from £3.49 to £305.99, with an average of £79.22. 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 →
Fluval edge replacement biomax - fluval, - £12.50
Fluval edge carbon • Clean clear sachets • Aquarium filter such - Free postage - New and Used
Fluval edge carbon • Clean clear sachets • Aquarium filter such - Free postage - New and Used
Fluval mini u3 u4 - fluval, u1, - £60.49
Fluval series filters • Provide option setting • Flow output different - Free postage - New and Used
Fluval series filters • Provide option setting • Flow output different - Free postage - New and Used
Fluval series internal - fluval, u - £22.89
Mini fluval underwater • Filter provides efficient • Filtration create superior - Free postage - New and Used
Mini fluval underwater • Filter provides efficient • Filtration create superior - Free postage - New and Used
Fluval external filter 107 - fluval, - £159.99
Fluval fx6 external • Filter building success • Series has had - Free postage - New and Used
Fluval fx6 external • Filter building success • Series has had - Free postage - New and Used
Fluval internal filter - fluval, - £59.99
Run all serial • Numbers through global • Police database your - Free postage - New and Used
Run all serial • Numbers through global • Police database your - Free postage - New and Used
Compatible polycarbon - 4, - £6.99
Finest aquatics ltd - Free postage - New and Used
Finest aquatics ltd - Free postage - New and Used
Fluval internal filter - fluval, - £65.90
All items are • New just box • Sent via royal - Free postage - New and Used
All items are • New just box • Sent via royal - Free postage - New and Used
Fluval external filter - external, 107 - £305.99
Fluval external canister • Filters are engineered • Optimal balance performance - Free postage - New and Used
Fluval external canister • Filters are engineered • Optimal balance performance - Free postage - New and Used
Compatible fluval 65g biomax - compatible, - £14.99
Very high surface • Area this product • Allows rapid colonisation - Free postage - New and Used
Very high surface • Area this product • Allows rapid colonisation - Free postage - New and Used
Fluval external aquarium - fluval, - £224.99
Fx6 fluval fx2 • External aquarium canister • Fx4 bridges gap - Free postage - New and Used
Fx6 fluval fx2 • External aquarium canister • Fx4 bridges gap - Free postage - New and Used
Fluval external filter with - fluval, - £159.99
Fluval external performance • Uvc line clarifier • Ccfl technology attacks - Free postage - New and Used
Fluval external performance • Uvc line clarifier • Ccfl technology attacks - Free postage - New and Used
Fluval betta poly - betta, poly-carb - £6.79
Pond plant basket • Labs aquarium stabiliser • Planet evolution aqua - Free postage - New and Used
Pond plant basket • Labs aquarium stabiliser • Planet evolution aqua - Free postage - New and Used
Compatible foam filter - 4, - £5.99
You are purchasing • Finest filters compatible • Foam filter pads - Free postage - New and Used
You are purchasing • Finest filters compatible • Foam filter pads - Free postage - New and Used
Fluval fx4 canister - canister, filter - £247.99
Fluval motor head • Fx4 external filter • Seal gasket 307 - Free postage - New and Used
Fluval motor head • Fx4 external filter • Seal gasket 307 - Free postage - New and Used
Fluval underwater internal - fluval, - £59.97
New other fluval • Underwater internal aquarium • Fish tank power - Free postage - New and Used
New other fluval • Underwater internal aquarium • Fish tank power - Free postage - New and Used
Fluval new series - fluval, - £42.99
- Free postage - New and Used
- Free postage - New and Used
Fluval filter spray bar kit - fx, - £22.99
Specifically use fluval • Fx2 fx4 fx6 • Canister filters adjustable - Free postage - New and Used
Specifically use fluval • Fx2 fx4 fx6 • Canister filters adjustable - Free postage - New and Used
Fluval compatible foam - fluval, - £4.99
Fluval plus compatible • Foam pads 185mm - Free postage - New and Used
Fluval plus compatible • Foam pads 185mm - Free postage - New and Used
Compatible polymax - 4, x - £6.99
Effectively produces crystal • Clear water reduces • Odours creates ideal - Free postage - New and Used
Effectively produces crystal • Clear water reduces • Odours creates ideal - Free postage - New and Used
Fluval fx4 fx5 - fx5, aquastop - £25.30
Replaces a20216 fluval • Fx5 fx6 aquastop • Valve a20217 such - Free postage - New and Used
Replaces a20216 fluval • Fx5 fx6 aquastop • Valve a20217 such - Free postage - New and Used
Fluval internal aquarium - internal, - £73.49
Position vertically against • Aquarium wall create • Currents customized flow - Free postage - New and Used
Position vertically against • Aquarium wall create • Currents customized flow - Free postage - New and Used
Fluval compatible foam - 4, - £3.99
Fluval 104 plus • Compatible foam pads • 150mm - Free postage - New and Used
Fluval 104 plus • Compatible foam pads • 150mm - Free postage - New and Used
Fluval poly max aquarium - fluval, - £6.52
Fluval poly max • Aquarium filter media • High quality cartridge - Free postage - New and Used
Fluval poly max • Aquarium filter media • High quality cartridge - Free postage - New and Used
Fluval external filter 107 - fluval, - £159.99
External filter fluval • Internal biological fish • Tank filtration pump - Free postage - New and Used
External filter fluval • Internal biological fish • Tank filtration pump - Free postage - New and Used
Compatible fluval polymax - fluval, - £5.99
Effectively filters phosphate • Produce crystal clear • Water reduces odours - Free postage - New and Used
Effectively filters phosphate • Produce crystal clear • Water reduces odours - Free postage - New and Used
Fluval 307 external aquarium - external, - £159.99
Pond plant basket • Etec efficient technology • Heart series labs - Free postage - New and Used
Pond plant basket • Etec efficient technology • Heart series labs - Free postage - New and Used
Fluval external power filter - power, - £224.99
Capable outputting 700 • Gph fx4 bridges • Gap between fluval - Free postage - New and Used
Capable outputting 700 • Gph fx4 bridges • Gap between fluval - Free postage - New and Used
Fluval new series - fluval, u-series - £73.49
Fluval internal filter • 1000l aquariums 240l • 600l - Free postage - New and Used
Fluval internal filter • 1000l aquariums 240l • 600l - Free postage - New and Used
Fluval aquarium fish - fish, fx4 - £13.99
Fluval output nozzle • Fx2 fx4 fx5 • 305 404 405 - Free postage - New and Used
Fluval output nozzle • Fx2 fx4 fx5 • 305 404 405 - Free postage - New and Used
Fluval biomax ceramic - u3, u4 - £8.85
Fluval filters such • Have huge wealth • Experience online trading - Free postage - New and Used
Fluval filters such • Have huge wealth • Experience online trading - Free postage - New and Used
Fluval filter media foam - fluval, - £20.99
Fluval foam pads • Series underwater filter • Biomax 110g such - Free postage - New and Used
Fluval foam pads • Series underwater filter • Biomax 110g such - Free postage - New and Used
Fluval 307 external power - 307, - £159.99
Fluval new 307 • External filter filters • Are big power - Free postage - New and Used
Fluval new 307 • External filter filters • Are big power - Free postage - New and Used
Fluval filter media - u3, - £22.99
Biomax 55g poly • Carb provides months • Clear healthy aquarium - Free postage - New and Used
Biomax 55g poly • Carb provides months • Clear healthy aquarium - Free postage - New and Used
Fluval fx4 external aquarium - fx4, - £247.99
Fluval fx4 external • Aquarium fish tank • Canister filter building - Free postage - New and Used
Fluval fx4 external • Aquarium fish tank • Canister filter building - Free postage - New and Used
Compatible foam filter pads - compatible, - £3.49
Schaum filterpads geeignet • Fluval plus aquarium • Polykohle filterpatrone carbon - Free postage - New and Used
Schaum filterpads geeignet • Fluval plus aquarium • Polykohle filterpatrone carbon - Free postage - New and Used
Fluval fx4 fx5 fx6 external - fx5, - £18.50
Intake stem a20225 • Fluva fx4l fx5 • Fx6 fish tank - Free postage - New and Used
Intake stem a20225 • Fluva fx4l fx5 • Fx6 fish tank - Free postage - New and Used
Fluval u4 filter - fluval, u3 - £20.50
Pad shaped match • Its specific model • Supporting secure fit - Free postage - New and Used
Pad shaped match • Its specific model • Supporting secure fit - Free postage - New and Used
Fluval poly carb carbon - u4, poly-carb - £21.99
Removes odours harmful • Toxins help create • Crystal clear aquarium - Free postage - New and Used
Removes odours harmful • Toxins help create • Crystal clear aquarium - Free postage - New and Used
Fluval carbon foam - u4, - £15.98
Carbon foam box • Important care advice • From thefluval range - Free postage - New and Used
Carbon foam box • Important care advice • From thefluval range - Free postage - New and Used
Fluval aquarium filter u3 - filter, - £8.95
Effectively produces crystal • Clear water reduces • Odors fluval underwater - Free postage - New and Used
Effectively produces crystal • Clear water reduces • Odors fluval underwater - Free postage - New and Used
Fluval bio fix biological - fluval, - £28.99
Best results rinse • Monthly using aquarium • Water replace partially - Free postage - New and Used
Best results rinse • Monthly using aquarium • Water replace partially - Free postage - New and Used
Fluval fx4 aquarium filter - fx4, - £37.69
Fluval fx4 • Labs aquarium stabiliser • Service kit contents - Free postage - New and Used
Fluval fx4 • Labs aquarium stabiliser • Service kit contents - Free postage - New and Used
Fluval internal filter - fluval, - £73.49
Fluval aquarium internal • Filter 1000l tanks • 240l suitable aquariums - Free postage - New and Used
Fluval aquarium internal • Filter 1000l tanks • 240l suitable aquariums - Free postage - New and Used
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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 48 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 £3.49, while premium listings can reach £305.99 — giving you a wide budget spread to work with. The average price of £79.22 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.