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10000l koi pond - pond, pressurized

10000l koi pond - pond, pressurized

£182.99
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Combo 10000l koi - 10000l, pond

Combo 10000l koi - 10000l, pond

£298.99
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Aquatic experts classic - classic, koi

Aquatic experts classic - classic, koi

£49.99
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Aquatic experts classic koi - aquatic,

Aquatic experts classic koi - aquatic,

£69.99
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1580gph pond pressure bio - 1580gph,

1580gph pond pressure bio - 1580gph,

£79.99
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Aquatic experts koi - koi, pond

Aquatic experts koi - koi, pond

£69.99
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1580gph pond pressure bio - 1580gph,

1580gph pond pressure bio - 1580gph,

£79.99
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Pond pressure bio filter - pressure,

Pond pressure bio filter - pressure,

£149.99
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1500 gallon pressurized - 1500,

1500 gallon pressurized - 1500,

£149.99
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Feet bulk pond bio filter - 4,

Feet bulk pond bio filter - 4,

£16.56
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2640 gph auto cleaning - 2640,

2640 gph auto cleaning - 2640,

£138.96
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2600 gal pond pressure bio - 2600,

2600 gal pond pressure bio - 2600,

£118.95
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Bio sponge filter media - bio,

Bio sponge filter media - bio,

£22.99
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1840gph pond pressure - pressure, bio

1840gph pond pressure - pressure, bio

£89.95
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Vivogrow pond pressure bio - vivogrow,

Vivogrow pond pressure bio - vivogrow,

£82.39
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Premium koi pond filter - koi,

Premium koi pond filter - koi,

£41.11
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2640 gph auto cleaning - 2640, auto-cleaning

2640 gph auto cleaning - 2640, auto-cleaning

£138.96
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Pack matala pond koi - matala, pond/koi

Pack matala pond koi - matala, pond/koi

£34.88
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Submersible pond filter - pond,

Submersible pond filter - pond,

£49.99
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Bulk roll filter media - filter,

Bulk roll filter media - filter,

£60.94
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Extra thick hard plastic - extra,

Extra thick hard plastic - extra,

£49.99
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Bio sponge filter media - bio, pads

Bio sponge filter media - bio, pads

£28.99
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Kimfilter 790 gph submersible - 790,

Kimfilter 790 gph submersible - 790,

£40.43
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Premium koi pond filter media - koi,

Premium koi pond filter media - koi,

£41.11
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Koi fish pond water filter - koi,

Koi fish pond water filter - koi,

£39.95
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Pressure biological pond - biological,

Pressure biological pond - biological,

£78.97
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10000l koi pond pressure - pressure, bio

10000l koi pond pressure - pressure, bio

£165.99
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Pressure biological pond - pressure,

Pressure biological pond - pressure,

£118.96
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Koi fish pond - koi, with

Koi fish pond - koi, with

£500.00
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Inch sump bottom - 4, drain

Inch sump bottom - 4, drain

£116.95
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Pressure biological pond - pressure,

Pressure biological pond - pressure,

£79.99
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Premium koi pond - koi, filter

Premium koi pond - koi, filter

£35.11
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Pond filter - pond,

Pond filter - pond,

£16.99
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1840gph pond pressure - 1840gph,

1840gph pond pressure - 1840gph,

£89.95
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Aquaneat replacement sponge - replacement,

Aquaneat replacement sponge - replacement,

£22.39
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Bio filter 10000l liter - uv,

Bio filter 10000l liter - uv,

£298.99
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1580gph pond pressure bio - pond,

1580gph pond pressure bio - pond,

£79.99
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690gph pond filter - pond, fountain

690gph pond filter - pond, fountain

£62.97
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Stage hma high flow - hma,

Stage hma high flow - hma,

£75.87
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Pressure biological pond - pressure,

Pressure biological pond - pressure,

£89.96
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Aquarium crystal clear filter - aquarium,

Aquarium crystal clear filter - aquarium,

£17.09
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Savio springflo bio filter - bio,

Savio springflo bio filter - bio,

£49.99
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2640 gph auto - 2640,

2640 gph auto - 2640,

£138.96
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Kimfilter 790 gph submersible - kimfilter,

Kimfilter 790 gph submersible - kimfilter,

£48.46
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Aqua ultima 6000 gal - ultima,

Aqua ultima 6000 gal - ultima,

£2629.94
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Japanese filter matting blue - matting,

Japanese filter matting blue - matting,

£37.99
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Lbs activated carbon - in, bulk

Lbs activated carbon - in, bulk

£19.93
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2630gph pond pressure bio - pressure,

2630gph pond pressure bio - pressure,

£118.95
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1580gph pond pressure bio - pond,

1580gph pond pressure bio - pond,

£79.99
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New design moving bed - bed, filter

New design moving bed - bed, filter

£51.95
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820gph pond filter fountain - filter,

820gph pond filter fountain - filter,

£62.96
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2630gph pond pressure bio - pressure,

2630gph pond pressure bio - pressure,

£118.97
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Sunsun grech cpf pond - grech,

Sunsun grech cpf pond - grech,

£88.99
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Extra thick japanese filter - japanese,

Extra thick japanese filter - japanese,

£61.00
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1320 gph pond pump adjustable - 1320,

1320 gph pond pump adjustable - 1320,

£56.99
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36 white bulk roll - x,

36 white bulk roll - x,

£52.15
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Sponge filter pad - 5,

Sponge filter pad - 5,

£38.99
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Submersible koi pond - submersible, filter

Submersible koi pond - submersible, filter

£41.55
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Bio pressure pond - pressure, filter

Bio pressure pond - pressure, filter

£149.99
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1840gph pond pressure - pond, bio

1840gph pond pressure - pond, bio

£89.97
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1840gph pond pressure - pond,

1840gph pond pressure - pond,

£89.96
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Lbs activated carbon bulk - activated, in

Lbs activated carbon bulk - activated, in

£22.31
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Hard coarse japanese - hard,

Hard coarse japanese - hard,

£49.99
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2640 gph auto cleaning - gph, auto-cleaning

2640 gph auto cleaning - gph, auto-cleaning

£138.96
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Aquarium crystal clear filter - aquarium,

Aquarium crystal clear filter - aquarium,

£17.68
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Submersible koi pond filter - submersible,

Submersible koi pond filter - submersible,

£47.45
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Pack matala filter sheets - matala,

Pack matala filter sheets - matala,

£139.00
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Foam filter pads - filter,

Foam filter pads - filter,

£35.99
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2110 gph pond - pressure, bio

2110 gph pond - pressure, bio

£138.96
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Advanced multi layer pond - advanced, multi-layer

Advanced multi layer pond - advanced, multi-layer

£33.96
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Submersible pond filter - pond, pump

Submersible pond filter - pond, pump

£59.97
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5pc 20pc filter - media, mesh

5pc 20pc filter - media, mesh

£12.99
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1600 2600gal pond - 1600-2600gal,

1600 2600gal pond - 1600-2600gal,

£118.96
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Lbs premier bulk - lbs, bio

Lbs premier bulk - lbs, bio

£18.28
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Ultralight ft pond - 1, cu.

Ultralight ft pond - 1, cu.

£19.82
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Aquarium pond filter wool - pond,

Aquarium pond filter wool - pond,

£101.52
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Pack koi spawning brush - spawning,

Pack koi spawning brush - spawning,

£49.08
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New jebao bio pressure - pressure, 24

New jebao bio pressure - pressure, 24

£149.99
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Sunsun grech cpf 250 11w - sunsun,

Sunsun grech cpf 250 11w - sunsun,

£124.99
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Bulk filter media for koi - media,

Bulk filter media for koi - media,

£60.94
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Aqua flo pond filter mat - filter, media

Aqua flo pond filter mat - filter, media

£34.75
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Jebao 1000 gallon - jebao,

Jebao 1000 gallon - jebao,

£99.95
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Pack pond filter brush - 3, 24"

Pack pond filter brush - 3, 24"

£36.99
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Bio sponge filter - media, pads

Bio sponge filter - media, pads

£13.49
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White koi pond - white,

White koi pond - white,

£36.33
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Submersible pond filter pump - submersible,

Submersible pond filter pump - submersible,

£56.96
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Bio ceramic rings lbs - bio,

Bio ceramic rings lbs - bio,

£54.99
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Bio sponge filter - sponge, media

Bio sponge filter - sponge, media

£16.99
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Submersible koi pond filter - submersible,

Submersible koi pond filter - submersible,

£41.92
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500 pcs bulk premier bio - premier,

500 pcs bulk premier bio - premier,

£35.30
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Sunsun cpf 250 - sunsun, cpf-250

Sunsun cpf 250 - sunsun, cpf-250

£139.99
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Bio sponge filter media - bio,

Bio sponge filter media - bio,

£15.99
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Sungrow aquarium crystal - aquarium,

Sungrow aquarium crystal - aquarium,

£15.15
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Pondh2o pressurized pond - pressurized,

Pondh2o pressurized pond - pressurized,

£199.95
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2642 gph pond filter system - gph,

2642 gph pond filter system - gph,

£169.99
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Nfesolar 20w solar pond - solar, filter

Nfesolar 20w solar pond - solar, filter

£142.18
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📊96 listings · from £12.99 · avg £108.93

Browse 96 koi filter listings currently in our index. Prices range from £12.99 to £2629.94, with an average of £108.93. 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 koi filter →

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Everything you need to know about koi filter

Whether you are looking for a brand-new or second-hand koi 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 £12.99, while premium listings can reach £2629.94 — giving you a wide budget spread to work with. The average price of £108.93 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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