Koi filter
Koi filter for sale on Ireland's largest auction and classifieds sites
Kockney koi black box - koi, - £60.99
Their fuss design • Makes installation simple • They have been - Free postage - New and Used
Their fuss design • Makes installation simple • They have been - Free postage - New and Used
Pressurised koi pond - koi, filter - £649.99
Lastly exiting water • Steriliser capable reducing • Harmful bacteria algae - Free postage - New and Used
Lastly exiting water • Steriliser capable reducing • Harmful bacteria algae - Free postage - New and Used
Pond dechlorinator water - dechlorinator, - £23.00
Pond water • Essential maintaining healthy • Fish beneficial bacteria - Free postage - New and Used
Pond water • Essential maintaining healthy • Fish beneficial bacteria - Free postage - New and Used
Aps koi fish - fish, pond - £274.99
Filter foams • After matting water • Will flow through - Free postage - New and Used
Filter foams • After matting water • Will flow through - Free postage - New and Used
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Bakki shower trickle filter - bakki, - £185.00
Bakki shower attempts • Simulate natures way • Filtering water similar - Free postage - New and Used
Bakki shower attempts • Simulate natures way • Filtering water similar - Free postage - New and Used
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48 listings · from £4.99 · avg £147.89
Browse 48 koi filter listings currently in our index. Prices range from £4.99 to £649.99, with an average of £147.89. 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 →
Pond moving bed filter - moving, - £64.99
This process which • Removes harmful ammonia • Nitrite from water - Free postage - New and Used
This process which • Removes harmful ammonia • Nitrite from water - Free postage - New and Used
Bakki shower trickle - bakki, - £189.99
Bakki shower attempts • Simulate natures way • Filtering water similar - Free postage - New and Used
Bakki shower attempts • Simulate natures way • Filtering water similar - Free postage - New and Used
Kockney koi pond filter - koi, - £172.30
Gravity pump fed • Pond filter kocknry • Koi currently used - Free postage - New and Used
Gravity pump fed • Pond filter kocknry • Koi currently used - Free postage - New and Used
Cbf range pond filter foams - cbf, - £8.49
Yellow fine grade • Foam blue coarse - Free postage - New and Used
Yellow fine grade • Foam blue coarse - Free postage - New and Used
Aquarium pond filter wool - pond, - £8.99
Finest filters are • Leading supplier high • Quality 100 aquarium - Free postage - New and Used
Finest filters are • Leading supplier high • Quality 100 aquarium - Free postage - New and Used
Pumice stone 10kg 25kg - stone, koi - £72.27
Available 10kg 25kg • Sacks high surface • Area 30mm 50mm - Free postage - New and Used
Available 10kg 25kg • Sacks high surface • Area 30mm 50mm - Free postage - New and Used
Kockney koi yamitsu filter - filter, / - £22.15
Kockney koi pump • Filter cage pmf • Aquatics - Free postage - New and Used
Kockney koi pump • Filter cage pmf • Aquatics - Free postage - New and Used
Auto cleaning pressurised koi - cleaning, - £249.99
Lastly exiting water • Steriliser capable reducing • Harmful bacteria algae - Free postage - New and Used
Lastly exiting water • Steriliser capable reducing • Harmful bacteria algae - Free postage - New and Used
Japanese matting jap mat - mat, pond - £59.99
These sheets can • Easily cut down • Fit most models - Free postage - New and Used
These sheets can • Easily cut down • Fit most models - Free postage - New and Used
Blow air pump - air, 65 - £136.89
Ltr super low • Power consumption watts • At38 dba 120 - Free postage - New and Used
Ltr super low • Power consumption watts • At38 dba 120 - Free postage - New and Used
Jebao pond filter - filter, koi - £79.95
Jebao pressurised pond • Filter built watt • Ultra violet clarifier - Free postage - New and Used
Jebao pressurised pond • Filter built watt • Ultra violet clarifier - Free postage - New and Used
Evolution aqua nexus 220 - evolution, - £577.90
Evolution aqua nexus • 220 auto kit • Gravity fed hassle - Free postage - New and Used
Evolution aqua nexus • 220 auto kit • Gravity fed hassle - Free postage - New and Used
Bakki shower trickle sieve - bakki, shower/trickle/sieve - £170.21
Handmade pre production • Sieve shower features • 1.5 inlet multi - Free postage - New and Used
Handmade pre production • Sieve shower features • 1.5 inlet multi - Free postage - New and Used
Stage hma high flow - 3, - £56.04
Koi pond dechlorinator • Chlorine removal aquafilter • Chlorinators are used - Free postage - New and Used
Koi pond dechlorinator • Chlorine removal aquafilter • Chlorinators are used - Free postage - New and Used
Pressurised pond filter - pond, - £7.99
Yellow fine grade • Foam - Free postage - New and Used
Yellow fine grade • Foam - Free postage - New and Used
Koi pond water filter for - filter, fish - £20.90
Pond water • Essential maintaining healthy • Fish beneficial bacteria - Free postage - New and Used
Pond water • Essential maintaining healthy • Fish beneficial bacteria - Free postage - New and Used
Filter floss wool foam media - floss, - £43.49
Aquarium pond filter • Wool works basis • Electrostatic attraction debris - Free postage - New and Used
Aquarium pond filter • Wool works basis • Electrostatic attraction debris - Free postage - New and Used
Solvent weld flanged tank - flanged, - £5.55
Flanged tank connector • Filter joining solution • Normal note flange - Free postage - New and Used
Flanged tank connector • Filter joining solution • Normal note flange - Free postage - New and Used
110mm threaded tank - threaded, - £16.99
Threaded tank connector • Has been work • Conjunction 110mm solvent - Free postage - New and Used
Threaded tank connector • Has been work • Conjunction 110mm solvent - Free postage - New and Used
Filter pump jebao pond friend - filter, - £105.99
Everything aquarist pond • Keeper pet loverview • All products bermuda - Free postage - New and Used
Everything aquarist pond • Keeper pet loverview • All products bermuda - Free postage - New and Used
Alfagrog ceramic filter - alfagrog, e25 - £11.99
Alfagrog ideal use • Any biological filter • System very popular - Free postage - New and Used
Alfagrog ideal use • Any biological filter • System very popular - Free postage - New and Used
Koi fish ponds - 2x, - £11.95
Chlorine pesticides comparison • Other carbon filters • Sintered block has - Free postage - New and Used
Chlorine pesticides comparison • Other carbon filters • Sintered block has - Free postage - New and Used
Evolution aqua pure sludge - evolution, - £24.95
What pure sludge • Build can cause • Imbalances pond ecosystem - Free postage - New and Used
What pure sludge • Build can cause • Imbalances pond ecosystem - Free postage - New and Used
Aquaforte compact sieve - compact, koi - £367.99
Compactsieve input water • Flows through sieve • Which removes all - Free postage - New and Used
Compactsieve input water • Flows through sieve • Which removes all - Free postage - New and Used
Pond filter - pond, - £465.70
Veggie bog filter • These filters don • Only look good - Free postage - New and Used
Veggie bog filter • These filters don • Only look good - Free postage - New and Used
Swell pond filter - box, kit - £260.99
Pond filter will • Water produce clear • Creating healthy wildlife - Free postage - New and Used
Pond filter will • Water produce clear • Creating healthy wildlife - Free postage - New and Used
Jebao pond clarifier - clarifier, ultra - £94.95
Ultra violet light • Algae causing green • Water are made - Free postage - New and Used
Ultra violet light • Algae causing green • Water are made - Free postage - New and Used
Bermuda pond skimmer - skimmer, 3000 - £59.49
Left float around • This could include • Things like leaves - Free postage - New and Used
Left float around • This could include • Things like leaves - Free postage - New and Used
Pressurised koi pond - koi, filter - £649.99
Allpondsolutions range pressurised • Pond filters built • Clarifiers are continuously - Free postage - New and Used
Allpondsolutions range pressurised • Pond filters built • Clarifiers are continuously - Free postage - New and Used
Complete koi fish box filter - complete, - £439.99
Bay filter system • Kit includes pump • Steriliser hose cbf - Free postage - New and Used
Bay filter system • Kit includes pump • Steriliser hose cbf - Free postage - New and Used
Kockney koi mega black - koi, box - £78.95
Fuss design makes • Installation simple they • Have been enable - Free postage - New and Used
Fuss design makes • Installation simple they • Have been enable - Free postage - New and Used
Kockney koi fish - koi, - £5.95
Kockney koi solvent • Weld filter cagesolvent • Pipe fitting cage - Free postage - New and Used
Kockney koi solvent • Weld filter cagesolvent • Pipe fitting cage - Free postage - New and Used
Kockney koi yamitsu small - kockney, - £59.95
Kockney koi yamitsu • Fish pond filter • Ponds quarantine tanks - Free postage - New and Used
Kockney koi yamitsu • Fish pond filter • Ponds quarantine tanks - Free postage - New and Used
Finerfilters koi pond water - finerfilters, - £75.25
Finerfilters standard dechlorinator • Triple water filter • Ltd manufactured from - Free postage - New and Used
Finerfilters standard dechlorinator • Triple water filter • Ltd manufactured from - Free postage - New and Used
Allpondsolutions auto cleaning - auto, - £649.99
Our range automatic • Pfc pressurised pond • Filters built clarifiers - Free postage - New and Used
Our range automatic • Pfc pressurised pond • Filters built clarifiers - Free postage - New and Used
Pressurised pond filter - pressurised, - £8.99
- Free postage - New and Used
- Free postage - New and Used
Fish mate pbio 15000l - fish, - £114.99
Keeping your pond • 15000 pbio pressurised • Filter here keep - Free postage - New and Used
Keeping your pond • 15000 pbio pressurised • Filter here keep - Free postage - New and Used
Media sacks pond koi filter - koi, - £4.99
- Free postage - New and Used
- Free postage - New and Used
Bermuda pond skimmer 3000 lph - bermuda, - £59.60
Its compact automatic • Skimming action make • Easy use straight - Free postage - New and Used
Its compact automatic • Skimming action make • Easy use straight - Free postage - New and Used
Pond filter media - media, fine - £10.95
Filter foam wadding • Thickness increased performance • 2.75 thick option - Free postage - New and Used
Filter foam wadding • Thickness increased performance • 2.75 thick option - Free postage - New and Used
Kockney koi yamitsu red filter - koi, - £19.99
Must have any • Pond owner looking • Maintain clean healthy - Free postage - New and Used
Must have any • Pond owner looking • Maintain clean healthy - Free postage - New and Used
Lotus green genie - genie, uv - £347.99
Lotus green genie • Pond filter box • Ultimate solution maintaining - Free postage - New and Used
Lotus green genie • Pond filter box • Ultimate solution maintaining - Free postage - New and Used
400 micron mesh - micron, - £7.99
These filter socks • Provide crystal clear • Water surprising see - Free postage - New and Used
These filter socks • Provide crystal clear • Water surprising see - Free postage - New and Used
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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 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 £4.99, while premium listings can reach £649.99 — giving you a wide budget spread to work with. The average price of £147.89 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.