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External filter

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External filter for sale on largest auction and classifieds sites

Home / Tool Accessories / External filter refurbished & used for sale | For Sale UK
Vevor 528gph canister filter - vevor,

Vevor 528gph canister filter - vevor,

£76.90
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Oase biomaster thermo - oase,

Oase biomaster thermo - oase,

£269.99
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Fish tank filter aquarium - fish,

Fish tank filter aquarium - fish,

£37.88
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Rheem rxhf external filter - rxhf-21,

Rheem rxhf external filter - rxhf-21,

£150.00
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Aquarium waterfall filter pump - filter,

Aquarium waterfall filter pump - filter,

£9.80
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Aquarium external canister - aquarium,

Aquarium external canister - aquarium,

£38.94
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Aquarium waterfall filter pump - aquarium,

Aquarium waterfall filter pump - aquarium,

£9.98
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Sunsun 3000 5 stage - hw-3000, uv

Sunsun 3000 5 stage - hw-3000, uv

£140.99
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Sunsun 302 303b hw - hw-302, hw-303b

Sunsun 302 303b hw - hw-302, hw-303b

£109.99
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Uimoso 396gph stage - 4-stage, external

Uimoso 396gph stage - 4-stage, external

£67.99
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Aquarium waterfall filter - waterfall, pump

Aquarium waterfall filter - waterfall, pump

£9.89
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Uimoso 528gph stage external - 528gph, 5-stage

Uimoso 528gph stage external - 528gph, 5-stage

£78.69
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Uimoso 396gph external - uimoso,

Uimoso 396gph external - uimoso,

£72.99
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Quiet hang back - quiet, aquarium

Quiet hang back - quiet, aquarium

£48.61
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New marineland magniflow - marineland,

New marineland magniflow - marineland,

£79.95
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Sicce whale 120 - whale,

Sicce whale 120 - whale,

£104.95
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Uimoso 235 gallon stage - uimoso,

Uimoso 235 gallon stage - uimoso,

£93.50
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Uimoso 235 gal - ., aquarium

Uimoso 235 gal - ., aquarium

£93.50
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Sunsun 5000 stage - hw-5000, 4

Sunsun 5000 stage - hw-5000, 4

£145.99
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Aquarium waterfall filter pump - waterfall,

Aquarium waterfall filter pump - waterfall,

£11.39
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Vevor 396gph canister filter - vevor,

Vevor 396gph canister filter - vevor,

£86.90
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Cfs 330 aquarium - cfs, fish

Cfs 330 aquarium - cfs, fish

£59.95
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Cfs 700 aquarium canister - cfs,

Cfs 700 aquarium canister - cfs,

£159.95
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Tetra whisper power filter - power,

Tetra whisper power filter - power,

£37.99
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System vintage diatom - 1,

System vintage diatom - 1,

£169.00
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Tetra whisper bio bag - tetra, bio-bag

Tetra whisper bio bag - tetra, bio-bag

£18.75
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External hang back - hang-on-back, aquarium

External hang back - hang-on-back, aquarium

£41.39
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Aquarium waterfall filter - aquarium,

Aquarium waterfall filter - aquarium,

£9.89
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Canister filter ultra quiet - canister, filter,

Canister filter ultra quiet - canister, filter,

£102.47
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Ultra quiet external filter - external,

Ultra quiet external filter - external,

£113.79
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Pondforse external aquarium - pondforse,

Pondforse external aquarium - pondforse,

£132.99
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External aquarium filter - filter, with

External aquarium filter - filter, with

£101.98
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Vevor 224 5gph - canister, filter

Vevor 224 5gph - canister, filter

£65.90
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Bio sponge filter - bio, fry

Bio sponge filter - bio, fry

£9.99
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Uimoso external gallon - external, 75

Uimoso external gallon - external, 75

£61.10
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Aquarium external canister - external,

Aquarium external canister - external,

£46.17
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Canister filter external - canister, filter,

Canister filter external - canister, filter,

£75.55
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Cfs 130 aquarium - 130,

Cfs 130 aquarium - 130,

£39.95
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Fluval aquaclear power - 30,

Fluval aquaclear power - 30,

£44.50
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Canister filter ultra quiet - canister, filter,

Canister filter ultra quiet - canister, filter,

£99.99
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Marineland penguin 350b - penguin,

Marineland penguin 350b - penguin,

£59.99
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Vevor 396gph canister filter - vevor,

Vevor 396gph canister filter - vevor,

£95.90
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Fluval carbon external - carbon,

Fluval carbon external - carbon,

£11.99
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Aqueon high quality - quality, carbon

Aqueon high quality - quality, carbon

£14.95
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Fzone aquarium filter kit 48 - fzone,

Fzone aquarium filter kit 48 - fzone,

£75.00
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Aqueon quietflow power - aqueon, 50

Aqueon quietflow power - aqueon, 50

£27.75
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Coodia external hang - external, hang-on-back

Coodia external hang - external, hang-on-back

£41.98
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Marineland penguin pro 275 - marineland,

Marineland penguin pro 275 - marineland,

£36.00
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Fluval zeo carb - fluval, zeo-carb

Fluval zeo carb - fluval, zeo-carb

£11.99
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Marineland penguin pro - marineland,

Marineland penguin pro - marineland,

£52.99
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External hang back - hang-on-back, aquarium

External hang back - hang-on-back, aquarium

£44.46
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Aquarium hang filter pump - hang,

Aquarium hang filter pump - hang,

£9.68
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External hang back - external, canister

External hang back - external, canister

£39.20
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Imountek 105gph stage - 105gph, 3-stage

Imountek 105gph stage - 105gph, 3-stage

£44.93
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Sunsun 106gph stage external - 106gph,

Sunsun 106gph stage external - 106gph,

£43.99
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Tetra whisper - tetra,

Tetra whisper - tetra,

£14.39
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Brand new top fin silenstream - new,

Brand new top fin silenstream - new,

£19.99
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Aquarium waterfall filter - waterfall, pump

Aquarium waterfall filter - waterfall, pump

£10.10
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Pack aqua tech change - 6, aqua-tech

Pack aqua tech change - 6, aqua-tech

£19.98
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650f aquarium pump external - sf-650f,

650f aquarium pump external - sf-650f,

£38.69
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Aquarium fish tank mini - fish,

Aquarium fish tank mini - fish,

£9.99
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Aquarium fish tank mini - tank,

Aquarium fish tank mini - tank,

£9.99
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Aqueon quietflow canister - aqueon,

Aqueon quietflow canister - aqueon,

£37.95
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Aquarium waterfall filter - waterfall, pump

Aquarium waterfall filter - waterfall, pump

£9.49
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Tetra whisper bio - bio-bag, filter

Tetra whisper bio - bio-bag, filter

£10.34
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Aquariums external canister - aquariums,

Aquariums external canister - aquariums,

£44.65
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Fluval uvc line water - fluval, in-line

Fluval uvc line water - fluval, in-line

£69.99
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Ultra quiet canister - ultra-quiet, filter

Ultra quiet canister - ultra-quiet, filter

£125.99
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Tetra whisper bio - whisper, filter

Tetra whisper bio - whisper, filter

£10.32
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Pcs bio double sponge filter - bio,

Pcs bio double sponge filter - bio,

£14.98
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Aquarium waterfall filter - aquarium, pump

Aquarium waterfall filter - aquarium, pump

£9.99
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Tetra whisper bio bag filter - tetra, bio-bag

Tetra whisper bio bag filter - tetra, bio-bag

£9.80
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Aquarium external canister - aquarium,

Aquarium external canister - aquarium,

£153.99
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Ultra quiet canister - canister, filter

Ultra quiet canister - canister, filter

£71.99
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Used cfs 130 - 130, aquarium

Used cfs 130 - 130, aquarium

£29.95
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Stage external canister - external,

Stage external canister - external,

£44.85
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Uimoso 224 5gph external - uimoso, 224.5gph

Uimoso 224 5gph external - uimoso, 224.5gph

£62.99
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Canister intakes inlet tube - intakes,

Canister intakes inlet tube - intakes,

£11.36
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Oase indoor aquatics - oase,

Oase indoor aquatics - oase,

£51.99
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Pond filter bag pump barrier - pond,

Pond filter bag pump barrier - pond,

£14.76
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Tetra whisper bio bag - tetra,

Tetra whisper bio bag - tetra,

£18.75
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For aqueon filter - aqueon, cartridge

For aqueon filter - aqueon, cartridge

£24.98
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Stage external canister - 3,

Stage external canister - 3,

£105.99
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Stage external canister pump - canister,

Stage external canister pump - canister,

£49.99
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Canister filter ultra quiet - canister, filter,

Canister filter ultra quiet - canister, filter,

£116.99
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Fluval ac20 power - fluval,

Fluval ac20 power - fluval,

£41.99
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Hidom external aquarium filter - hidom,

Hidom external aquarium filter - hidom,

£87.93
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External aquarium filter - external,

External aquarium filter - external,

£48.60
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602b 603b inlet - hw-602b/hw-603b,

602b 603b inlet - hw-602b/hw-603b,

£5.99
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Fluval uvc line - fluval, fx

Fluval uvc line - fluval, fx

£85.00
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External hang back canister - external,

External hang back canister - external,

£58.89
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Aquaclear power filter - aquaclear, 70

Aquaclear power filter - aquaclear, 70

£54.95
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Cnz sun 704b - cnz, 525

Cnz sun 704b - cnz, 525

£119.99
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Marineland penguin pro 175 - marineland,

Marineland penguin pro 175 - marineland,

£24.95
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Advantage 2000 sterilizer 15 - advantage,

Advantage 2000 sterilizer 15 - advantage,

£117.95
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Quiet hang back - quiet,

Quiet hang back - quiet,

£52.98
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📊96 listings · from £5.99 · avg £59.01

Browse 96 external filter listings currently in our index. Prices range from £5.99 to £269.99, with an average of £59.01. 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 external filter →

Try this: external fish tank filter | fluval 205 | fluval 403 | fluval 406 external filter | fluval edge aquarium | fluval external filter | fluval fish tank | fluval fx6 | fluval fx6 filter | fx6 filter

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Everything you need to know about external filter

Whether you are looking for a brand-new or second-hand external 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 £5.99, while premium listings can reach £269.99 — giving you a wide budget spread to work with. The average price of £59.01 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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