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Saltwater aquarium tanks

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Saltwater aquarium tanks for sale on largest auction and classifieds sites

Home / Water Treatment Equipment / Saltwater aquarium tanks refurbished & used for sale | For Sale UK
Salifert test kit marine - salifert,

Salifert test kit marine - salifert,

£9.99
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Smart bluetooth app control - app,

Smart bluetooth app control - app,

£95.00
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Aquarium fish tank sinking - fish,

Aquarium fish tank sinking - fish,

£12.83
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Aquarium filter media - 8d,

Aquarium filter media - 8d,

£6.15
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Salifert test kit marine - salifert,

Salifert test kit marine - salifert,

£20.00
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Fluval m150 submersible fish - fluval,

Fluval m150 submersible fish - fluval,

£20.99
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Marine aquarium glass - aquarium,

Marine aquarium glass - aquarium,

£6.99
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Aqua one aquarium - fish, tanks

Aqua one aquarium - fish, tanks

£1139.99
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Funktion freshwater - d-d,

Funktion freshwater - d-d,

£127.99
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Aquarium test strips way - aquarium, strips,

Aquarium test strips way - aquarium, strips,

£13.63
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Fluval sea evo nano - sea,

Fluval sea evo nano - sea,

£159.99
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Salifert profi test kit range - salifert,

Salifert profi test kit range - salifert,

£34.95
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Aquarium samoa coral sand - coral,

Aquarium samoa coral sand - coral,

£42.95
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Dipstik aquarium test strips - dipstik,

Dipstik aquarium test strips - dipstik,

£13.62
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Funktion freshwater - d-d,

Funktion freshwater - d-d,

£89.99
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Large aquarium cave - large, for

Large aquarium cave - large, for

£27.99
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Aqua one aquarium fish tanks - aqua,

Aqua one aquarium fish tanks - aqua,

£911.99
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Fluval sea evo - evo, 52l

Fluval sea evo - evo, 52l

£144.99
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Salifert test kit - salifert,

Salifert test kit - salifert,

£34.95
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Rk2 dry live rock - rk2, tower

Rk2 dry live rock - rk2, tower

£187.90
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Led glass aquarium fish tank - led,

Led glass aquarium fish tank - led,

£49.95
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Salifert marine all - marine, one

Salifert marine all - marine, one

£29.95
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Aquaforest carbon marine - aquaforest,

Aquaforest carbon marine - aquaforest,

£15.99
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Salifert profi test kit - ph,

Salifert profi test kit - ph,

£10.25
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Salifert test kit - salifert, set

Salifert test kit - salifert, set

£74.99
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Oase biorb tube - oase,

Oase biorb tube - oase,

£169.95
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Aqua one stripglo marine - stripglo, led

Aqua one stripglo marine - stripglo, led

£53.99
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Api liquid aquarium fish - liquid,

Api liquid aquarium fish - liquid,

£23.95
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Mini protein skimmer - mini, quiet

Mini protein skimmer - mini, quiet

£68.87
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Seachem reef complete - complete, marine

Seachem reef complete - complete, marine

£13.99
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Salifert test kit set - kit, marine

Salifert test kit set - kit, marine

£28.99
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300ml nitrifying bacteria - nitrifying,

300ml nitrifying bacteria - nitrifying,

£17.99
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Api master test kit - api, freshwater

Api master test kit - api, freshwater

£23.95
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Tr1 unique dry - unique, fiji

Tr1 unique dry - unique, fiji

£42.30
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Pawfly saltwater aquarium - pawfly,

Pawfly saltwater aquarium - pawfly,

£39.46
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Activated carbon pellet form - activated,

Activated carbon pellet form - activated,

£39.75
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Hikari marine 50g sinking - hikari,

Hikari marine 50g sinking - hikari,

£8.25
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Tunze care magnet aquarium - care,

Tunze care magnet aquarium - care,

£53.95
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Salinity refractometer - 0-10%,

Salinity refractometer - 0-10%,

£18.41
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Aquarium fish tank - aquarium,

Aquarium fish tank - aquarium,

£20.56
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Biorb amazonas root - biorb, sculpture

Biorb amazonas root - biorb, sculpture

£11.95
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Activated carbon pellet form - activated,

Activated carbon pellet form - activated,

£9.49
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Tiny fish tank shrimp - fish,

Tiny fish tank shrimp - fish,

£30.14
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Non toxic fine white - fine, quartz

Non toxic fine white - fine, quartz

£3.50
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Seachem carbonate complete - seachem,

Seachem carbonate complete - seachem,

£12.37
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Activated carbon pellet form - activated,

Activated carbon pellet form - activated,

£49.95
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Activated carbon pellet form - activated,

Activated carbon pellet form - activated,

£9.49
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Salifert test kh kit - ca,

Salifert test kh kit - ca,

£39.99
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Activated carbon pellet form - carbon,

Activated carbon pellet form - carbon,

£16.29
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Labs marine lab - marine,

Labs marine lab - marine,

£15.99
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Api 5in1 aquarium - 5in1, test

Api 5in1 aquarium - 5in1, test

£7.99
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Oase biorb sea fan - biorb,

Oase biorb sea fan - biorb,

£16.95
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Oase biorb led mcr standard - ,

Oase biorb led mcr standard - ,

£99.95
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Aquarium fish tank - fish, castle

Aquarium fish tank - fish, castle

£19.66
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Biorb life 45l white aquarium - white,

Biorb life 45l white aquarium - white,

£199.95
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Oase biorb sea - whips, 3

Oase biorb sea - whips, 3

£10.95
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Aquarium fish tank submersible - fish,

Aquarium fish tank submersible - fish,

£6.95
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Aquarium test strips - 7, 1

Aquarium test strips - 7, 1

£11.72
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Biorb classic aquarium - classic,

Biorb classic aquarium - classic,

£187.95
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Tunze comline doc protein - comline,

Tunze comline doc protein - comline,

£149.99
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Resin filter media - filter, aquarium

Resin filter media - filter, aquarium

£8.99
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Activated carbon pellet - carbon,

Activated carbon pellet - carbon,

£39.75
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High efficiency aquarium - high,

High efficiency aquarium - high,

£25.99
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Triton icp oes seawater - triton, icp-oes

Triton icp oes seawater - triton, icp-oes

£33.11
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Api nitrite test kit - test,

Api nitrite test kit - test,

£11.99
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Oase biorb topiary - biorb,

Oase biorb topiary - biorb,

£7.95
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Fake coral aquarium ornament - fake,

Fake coral aquarium ornament - fake,

£8.00
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Aquarium silence strip - silence,

Aquarium silence strip - silence,

£5.94
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Quiet aquarium air pump - aquarium,

Quiet aquarium air pump - aquarium,

£21.98
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Fish tank decorations - fish,

Fish tank decorations - fish,

£12.83
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Veny recycle coral aquarium - veny's,

Veny recycle coral aquarium - veny's,

£3.99
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Fluval nano desktop - fluval, fresh/

Fluval nano desktop - fluval, fresh/

£40.22
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Salifert test kit - test, marine

Salifert test kit - test, marine

£29.95
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Salifert test kit - set, marine

Salifert test kit - set, marine

£74.90
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Aquarium auto top - auto, off

Aquarium auto top - auto, off

£7.24
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Biorb barnacle sculpture - biorb,

Biorb barnacle sculpture - biorb,

£25.95
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Aquarium fish tank - 1,

Aquarium fish tank - 1,

£12.56
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Biorb life aquarium all - aquarium, one

Biorb life aquarium all - aquarium, one

£345.95
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Api quick start aquarium fish - start,

Api quick start aquarium fish - start,

£16.95
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Biorb loop aquarium fish - aquarium,

Biorb loop aquarium fish - aquarium,

£210.95
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Aquarium air pump fish - air,

Aquarium air pump fish - air,

£14.99
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Aquarium air bubbler with - air,

Aquarium air bubbler with - air,

£14.99
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Biorb seahorses coral - seahorses,

Biorb seahorses coral - seahorses,

£42.95
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Spectrum prdi reverse - spectrum,

Spectrum prdi reverse - spectrum,

£23.37
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Aquarium fish tank sinking - tank,

Aquarium fish tank sinking - tank,

£14.09
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Way aquarium test strips for - 8-way,

Way aquarium test strips for - 8-way,

£14.10
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Oase biorb topiary - topiary, purple

Oase biorb topiary - topiary, purple

£7.95
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Led glass aquarium fish - led,

Led glass aquarium fish - led,

£49.50
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Biorb oase white sea lily - sea,

Biorb oase white sea lily - sea,

£12.95
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Labs marine lab - labs, test

Labs marine lab - labs, test

£9.95
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Eheim aquastar marine - aquastar,

Eheim aquastar marine - aquastar,

£389.95
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Aquarium shipwreck ornament - aquarium,

Aquarium shipwreck ornament - aquarium,

£21.59
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Meditec copper treatment for - copper,

Meditec copper treatment for - copper,

£20.00
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Pl5 dry tonga live - pl5,

Pl5 dry tonga live - pl5,

£26.70
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Api ammonia test kit - ammonia, liquid

Api ammonia test kit - ammonia, liquid

£18.99
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Ha6 silicone sealant rtv - silicone,

Ha6 silicone sealant rtv - silicone,

£7.99
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📊96 listings · from £3.5 · avg £67.24
⚠️ These listings were last updated more than 22 days ago. Search for fresh listings

Browse 96 saltwater aquarium tanks listings currently in our index. Prices range from £3.5 to £1139.99, with an average of £67.24. 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: cold water fish tanks | discus aquarium | dri eaz | es8000 | hanna checker | magnehelic gauge | tetra fish tank

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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 £3.5, while premium listings can reach £1139.99 — giving you a wide budget spread to work with. The average price of £67.24 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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