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Pvc koi pond - above, ground
£129.00
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100 gallon koi quarantine/grow
£312.70
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Koi pond quarantine - koi,
£312.70
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Pvc koi pond 250l - koi, pond,250l
£119.00
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Kockney koi solvent - kockney, tank
£18.89
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Vevor canvas fish pond 270 - vevor,
£244.94
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Koi goldfish holding - goldfish, tank
£399.00
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Koi fish grow holding - koi,
£209.00
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Koi quarantine growing tank - growing, on
£341.24
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Vevor canvas fish pond 470 - canvas, pond,
£330.91
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Koi measuring tank blue - measuring,
£179.46
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Large quarantine tank for - large,
£37.99
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Professional quarantine tank - professional,
£488.24
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1500l collapsible folding - 1500l,
£307.49
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1000l collapsible folding - 1000l,
£277.33
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2000l collapsible folding - 2000l,
£327.99
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Kockney koi undergravel - kockney, filter
£16.99
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Charles austen air - austen, pump
£84.35
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Solvent weld flanged tank - weld,
£10.99
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Vevor koi aquarium - aquarium, above
£180.96
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Diamond cut filter grids - x,
£19.99
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110mm threaded tank - 4“/110mm,
£16.99
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Tetra prima discus granules - tetra,
£153.99
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Aquarium bubbles pond pump - aquarium,
£159.99
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Pond aquarium uv - pond, light
£136.99
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Koi fiberglass quarantine - fiberglass,
£404.25
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Quarantine tank koi growing - quarantine,
£430.49
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Pond air pump koi - pond,
£37.99
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700l collapsible folding round - 700l,
£249.25
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2500l collapsible folding - collapsible,
£358.59
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Valterra slide valve - valve, 4"
£57.95
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Fish koi pond swim pool - or,
£3760.30
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Aquarium pond filter - aquarium, wool
£27.99
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Flanged tank connector - ,
£9.95
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2000 litre water butt - butt, fish
£999.89
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Filtreau amalgam submersible - filtreau,
£235.00
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Superfish koi fish pond - superfish,
£44.99
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Kockney koi solvent weld - kockney,
£13.50
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Tetra pro algae aquarium - algae,
£12.99
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Koi carp pond quarantine grow - pond, quarantine/grow
£199.99
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Alfagrog pond biological - pond,
£11.95
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Submersible pond pumps water - submersible,
£25.94
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Solvent weld fittings koi - 1.5",
£2.99
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Pond air pump koi - pond,
£16.99
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Aqua jet 700 - aerator, air
£19.99
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Pond tank liner connector - liner, koi
£10.95
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3mm bloodworm floating pellets - 3mm,
£19.99
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Koi round inspection bowl blue - round,
£48.86
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Kockney koi tank - koi, 1.5
£3.99
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110mm flanged tank - 110mm/4",
£11.99
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Solvent weld inch flanged - solvent,
£5.55
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Threaded tank connector with - tank,
£6.99
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Threaded tank connector - threaded,
£8.34
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Solvent weld flanged - solvent, tank
£5.45
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Air diffuser disc for - disc,
£31.90
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Superfish koi fish pond - superfish,
£46.90
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Aquarium air line green fish - aquarium,
£9.49
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Weighted suction dome - weighted, bottom
£89.99
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Vevor canvas fish pond - fish, 126.8
£173.74
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56mm bottom drain air - drain,
£39.99
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Solvent weld inch flanged - weld,
£9.95
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Air line fish tank windscreen - air,
£93.24
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Square cut filter grids - filter,
£19.99
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Pack 5 inch - 2,
£12.99
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Air line splitter - splitter, for
£16.99
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82mm threaded tank - threaded,
£13.45
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Large inch 110mm koi pond - 4,
£59.99
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Aquarium telescopic fish tank - telescopic,
£407.99
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110mm bottom drain koi - bottom,
£24.99
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110mm radial flanged - radial,
£16.49
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Charles austen eta - charles, air
£129.84
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Threaded tank connector koi - threaded,
£6.99
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Koi pond airpump fish - koi,
£124.99
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Air line tube weighted feet - tube,
£15.49
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55mm flanged tank - 2",
£6.98
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Kintama bio filter - media, for
£17.49
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Inch kockney koi - inch, (43mm)
£7.49
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Aqua sure flange tank - sure,
£5.55
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56mm bottom drain and - drain, dome
£19.99
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Solvent weld inch flanged - solvent,
£7.95
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Threaded tank connector - tank, 2"
£19.99
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Yamistu kockney koi - yamistu,
£8.99
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Pond tank liner connector - pond,
£5.55
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Triple bar air - bar, diffuser
£44.99
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Inch flanged tank liner - inch, tank/liner
£11.95
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Aqua sure cut filter grids - cut, egg
£19.99
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Flanged tank liner connector - flanged,
£5.55
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Ceramic airstone 50mm ball - ceramic, /2"
£3.99
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50mm flanged tank - 50mm,
£8.99
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Pre filter foam - blocks, for
£12.29
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Solvent weld threaded tank - weld,
£9.45
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Eco s15000 water pump - s15000, koi
£129.99
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Solvent weld black waste pipe
£3.90
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90mm threaded tank - 90mm,
£19.45
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Koi fish grow holding - fish,
£189.95
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Pond aquarium scaping - pond, foam
£18.99
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Looking for more koi tank?
Search eBay live — fresh results filtered for the best value, updated every hour.
Browse 96 koi tank listings currently in our index. Prices range from £2.99 to £3760.3, with an average of £143.59. 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 tank →
Try this: rockwool cubes | chrysanthemum | water lily | lime tree | camping water container | gold krugerrand | bretby jardiniere | sweet pea seeds | antique tripod | mammillaria
Whether you are looking for a brand-new or second-hand koi tank, 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 £2.99, while premium listings can reach £3760.3 — giving you a wide budget spread to work with. The average price of £143.59 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.