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Saltwater aquarium tanks

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Saltwater aquarium tanks for sale on largest auction and classifieds sites

Home / Lenses & Filters / Saltwater aquarium tanks refurbished & used for sale | For Sale UK
Internal aquarium fish tank - aquarium,

Internal aquarium fish tank - aquarium,

£16.99
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Fluval sea evo 52l - fluval,

Fluval sea evo 52l - fluval,

£63.10
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Led glass aquarium - led,

Led glass aquarium - led,

£29.95
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Funktion freshwater - funktion,

Funktion freshwater - funktion,

£84.99
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Non toxic fine - toxic, white

Non toxic fine - toxic, white

£3.09
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Salifert profi test kit range - kit,

Salifert profi test kit range - kit,

£34.95
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Non toxic fine white quartz - non,

Non toxic fine white quartz - non,

£2.99
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Aqua one aquarium - aqua, tanks

Aqua one aquarium - aqua, tanks

£1139.99
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Fluval m150 submersible - submersible, fish

Fluval m150 submersible - submersible, fish

£20.99
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Fluval sea evo 52l marine - evo,

Fluval sea evo 52l marine - evo,

£144.99
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Salifert test kit - kit, marine

Salifert test kit - kit, marine

£11.89
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Activated carbon pellet - activated,

Activated carbon pellet - activated,

£49.95
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Fluval sea evo - evo, saltwater

Fluval sea evo - evo, saltwater

£159.99
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Saltwater tank equipment - ,

Saltwater tank equipment - ,

£78.70
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Aquarium fish tank - aquarium, sinking

Aquarium fish tank - aquarium, sinking

£12.83
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Api master saltwater test kit - api,

Api master saltwater test kit - api,

£29.99
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Aquarium ammonia test strips - test,

Aquarium ammonia test strips - test,

£12.25
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Non toxic fine white - non,

Non toxic fine white - non,

£3.50
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Salifert test kit set marine - kit,

Salifert test kit set marine - kit,

£74.99
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Api liquid aquarium fish - api,

Api liquid aquarium fish - api,

£23.95
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Aqua one aquarium fish - aqua,

Aqua one aquarium fish - aqua,

£911.99
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Ha6 sealant silicone rtv - ha6,

Ha6 sealant silicone rtv - ha6,

£59.99
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Marine aquarium glass - marine,

Marine aquarium glass - marine,

£6.99
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Aquarium samoa coral sand 5kg - samoa,

Aquarium samoa coral sand 5kg - samoa,

£42.95
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Api master test kit freshwater - api,

Api master test kit freshwater - api,

£23.95
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Pawfly saltwater aquarium - w,

Pawfly saltwater aquarium - w,

£39.46
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Api 5in1 aquarium water test - 5in1,

Api 5in1 aquarium water test - 5in1,

£7.99
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Aquaforest carbon marine - aquaforest,

Aquaforest carbon marine - aquaforest,

£15.99
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Tunze comline doc protein - tunze,

Tunze comline doc protein - tunze,

£149.99
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Salifert marine all one - salifert,

Salifert marine all one - salifert,

£29.95
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Seachem reef complete marine - complete,

Seachem reef complete marine - complete,

£79.99
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Salifert test kh kit - salifert, mg

Salifert test kh kit - salifert, mg

£39.99
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Biorb amazonas root sculpture - biorb,

Biorb amazonas root sculpture - biorb,

£11.95
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Activated carbon pellet - carbon,

Activated carbon pellet - carbon,

£9.49
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Aqua one stripglo - one,

Aqua one stripglo - one,

£53.99
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Biorb barnacle sculpture - barnacle,

Biorb barnacle sculpture - barnacle,

£27.95
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Spectrum prdi reverse - prdi-20,

Spectrum prdi reverse - prdi-20,

£25.00
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300l internal aquarium - 300l/h,

300l internal aquarium - 300l/h,

£13.99
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Ha6 silicone sealant rtv - ha6,

Ha6 silicone sealant rtv - ha6,

£9.39
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Smart automatic top off - smart, system

Smart automatic top off - smart, system

£60.97
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Pack ha6 marine safe - of,

Pack ha6 marine safe - of,

£12.20
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Activated carbon pellet form - carbon,

Activated carbon pellet form - carbon,

£16.95
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Funktion freshwater - funktion,

Funktion freshwater - funktion,

£80.99
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Tunze care magnet - tunze, aquarium

Tunze care magnet - tunze, aquarium

£17.49
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Aquarium shipwreck decoration - shipwreck,

Aquarium shipwreck decoration - shipwreck,

£8.96
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Fluval m50 submersible fish - submersible,

Fluval m50 submersible fish - submersible,

£20.49
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Bond ha6 rtv marine water - bond,

Bond ha6 rtv marine water - bond,

£6.95
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Biorb life aquarium - biorb, in

Biorb life aquarium - biorb, in

£241.95
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Biorb life 45l white aquarium - life,

Biorb life 45l white aquarium - life,

£199.95
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Aquarium auto top off system - auto,

Aquarium auto top off system - auto,

£7.24
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Fauna marin red - fm, algae

Fauna marin red - fm, algae

£26.99
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Activated carbon pellet - carbon, form

Activated carbon pellet - carbon, form

£9.49
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Oase biorb plate coral - plate, 3

Oase biorb plate coral - plate, 3

£10.95
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Salifert test kit set marine - test,

Salifert test kit set marine - test,

£28.99
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Eheim aquastar marine - eheim,

Eheim aquastar marine - eheim,

£389.95
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Salifert profi test kit for - profi,

Salifert profi test kit for - profi,

£10.25
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Oase biorb water treatments - oase,

Oase biorb water treatments - oase,

£9.95
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Biorb classic aquarium acrylic - biorb,

Biorb classic aquarium acrylic - biorb,

£165.95
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Biorb classic 60l white - biorb,

Biorb classic 60l white - biorb,

£187.95
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Hikari marine 50g sinking - hikari,

Hikari marine 50g sinking - hikari,

£8.15
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Oase biorb pink topiary - biorb,

Oase biorb pink topiary - biorb,

£13.95
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Seachem reef plus complete - reef,

Seachem reef plus complete - reef,

£19.55
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Oase biorb led mcr standard - led,

Oase biorb led mcr standard - led,

£69.95
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Whisper quiet aquarium - whisper-quiet, 3w

Whisper quiet aquarium - whisper-quiet, 3w

£16.99
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Api calcium aquarium - api, salt

Api calcium aquarium - api, salt

£11.65
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Meditec copper treatment - treatment, for

Meditec copper treatment - treatment, for

£20.00
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Biorb life litre aquarium - 60,

Biorb life litre aquarium - 60,

£345.95
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Veny recycle coral aquarium - coral,

Veny recycle coral aquarium - coral,

£3.99
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Fishdoctor alert continuous - fishdoctor, ph

Fishdoctor alert continuous - fishdoctor, ph

£9.73
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Aquarium test strips way - strips,, 7-way

Aquarium test strips way - strips,, 7-way

£11.64
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Oase biorb topiary - oase,

Oase biorb topiary - oase,

£7.95
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Mini float valve - valve, auto

Mini float valve - valve, auto

£5.04
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Aquarium protein skimmer - aquarium,

Aquarium protein skimmer - aquarium,

£66.56
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Seachem reef complete - reef,

Seachem reef complete - reef,

£16.62
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Aquarium ammonia test strips - aquarium,

Aquarium ammonia test strips - aquarium,

£12.25
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Salifert test kit set marine - test,

Salifert test kit set marine - test,

£34.95
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Eco friendly aquarium - 5, eco-friendly

Eco friendly aquarium - 5, eco-friendly

£6.99
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Biorb loop aquarium fish tank - loop,

Biorb loop aquarium fish tank - loop,

£214.95
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Labs marine lab test - nt,

Labs marine lab test - nt,

£15.99
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Labs marine lab - labs, kit

Labs marine lab - labs, kit

£10.49
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Aqua nova nwm 2000 wavemaker - aqua,

Aqua nova nwm 2000 wavemaker - aqua,

£15.99
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Aquarium fish tank castle - fish,

Aquarium fish tank castle - fish,

£21.85
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Dipstik aquarium test strips - aquarium,

Dipstik aquarium test strips - aquarium,

£14.39
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Seachem carbonate complete - carbonate,

Seachem carbonate complete - carbonate,

£12.37
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Pl4 real reef dry live - reef,

Pl4 real reef dry live - reef,

£24.10
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Biorb oase white sea - white, lily

Biorb oase white sea - white, lily

£12.95
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Aquarium test strips way - test, strips,

Aquarium test strips way - test, strips,

£12.55
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Api ammonia test - ammonia,

Api ammonia test - ammonia,

£18.99
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10w usb aquarium - 10w,

10w usb aquarium - 10w,

£13.93
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Oase biorb sea - sea, whips

Oase biorb sea - sea, whips

£10.95
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Fritzzyme monster 460 - monster,

Fritzzyme monster 460 - monster,

£48.99
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Ha6 silicone sealant - silicone, rtv

Ha6 silicone sealant - silicone, rtv

£28.80
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Eden gravel vacuum cleaner - eden,

Eden gravel vacuum cleaner - eden,

£42.95
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Biorb seahorses coral - biorb,

Biorb seahorses coral - biorb,

£36.95
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Aragonite aquarium sand - sand, 10lb

Aragonite aquarium sand - sand, 10lb

£20.72
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Aquarium fish tank sinking - fish,

Aquarium fish tank sinking - fish,

£15.65
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Looking for more saltwater aquarium tanks?

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📊96 listings · from £2.99 · avg £66.16
⚠️ These listings were last updated more than 18 days ago. Search for fresh listings

Browse 96 saltwater aquarium tanks listings currently in our index. Prices range from £2.99 to £1139.99, with an average of £66.16. 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 saltwater aquarium tanks →

Try this: sunagor 75 300 | cinema lenses | olympus m zuiko micro four thirds lenses | helios lens | pentacon 135 2 8 | nikon 35mm 1 8 | rodagon | heliopan variable nd filter | vauxhall astra automatic | dpf additive kit

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Everything you need to know about saltwater aquarium tanks

Whether you are looking for a brand-new or second-hand saltwater aquarium tanks, 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 £1139.99 — giving you a wide budget spread to work with. The average price of £66.16 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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