Marine fish tank
Marine fish tank for sale on Ireland's largest auction and classifieds sites
Aquarium fish tank cabinet - fish, - £599.99
This 300 litre • Gallon 4ft white • Fish tank perfect - Free postage - New and Used
This 300 litre • Gallon 4ft white • Fish tank perfect - Free postage - New and Used
Red sea reefer xl - reefer, g2+ - £1050.00
This lovely tank • Excellent condition very • Little signs wear - Free postage - New and Used
This lovely tank • Excellent condition very • Little signs wear - Free postage - New and Used
Hidom controllable pump for - pump, - £74.99
Pump has individual • Flow settings allowing • Rate achieved your - Free postage - New and Used
Pump has individual • Flow settings allowing • Rate achieved your - Free postage - New and Used
Red sea max - sea, nano - £924.70
Tank capacity 125 • Litres this aquarium • Perfect keeping variety - Free postage - New and Used
Tank capacity 125 • Litres this aquarium • Perfect keeping variety - Free postage - New and Used
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Diversa aquarium with - with, stand - £515.95
This way you • Will know exactly • When expect your - Free postage - New and Used
This way you • Will know exactly • When expect your - Free postage - New and Used
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48 listings · from £2.99 · avg £202.71
⚠️ These listings were last updated more than 22 days ago.
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Browse 48 marine fish tank listings currently in our index. Prices range from £2.99 to £1050, with an average of £202.71. 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 marine fish tank →
Aquarium long marine - aquarium, long. - £649.30
You need make • Sure that everything • Aquarium cabinet capacity - Free postage - New and Used
You need make • Sure that everything • Aquarium cabinet capacity - Free postage - New and Used
60cm aquarium marine - aquarium/marine, fish - £5.99
Double sided background • Show solid colours • Side black one - Free postage - New and Used
Double sided background • Show solid colours • Side black one - Free postage - New and Used
Fluval sea evo - marine, fresh - £169.99
Fluval sea evo • Marine fresh water • Aquarium fish tank - Free postage - New and Used
Fluval sea evo • Marine fresh water • Aquarium fish tank - Free postage - New and Used
Egg crate for aquarium fish - aquarium, - £2.99
Finest filters egg • Crate supplied convenient • Sized 30cm 15cm - Free postage - New and Used
Finest filters egg • Crate supplied convenient • Sized 30cm 15cm - Free postage - New and Used
Atm colony marine nitrifying - -, - £89.99
Atm colony marine • Nitrifying bacteria available • Aquarium fish blue - Free postage - New and Used
Atm colony marine • Nitrifying bacteria available • Aquarium fish blue - Free postage - New and Used
Hidom external aquarium filter - hidom, - £9.95
Maintaining filter very • Simple drip free • Shut off tap - Free postage - New and Used
Maintaining filter very • Simple drip free • Shut off tap - Free postage - New and Used
Aquarium 480l fish tank - 480l, x - £499.00
One adult will • Required collect aquarium • Make cabinets covers - Free postage - New and Used
One adult will • Required collect aquarium • Make cabinets covers - Free postage - New and Used
External aquarium canister - external, - £79.99
Jebao one touch • External canister filters • Outlet tube fitted - Free postage - New and Used
Jebao one touch • External canister filters • Outlet tube fitted - Free postage - New and Used
Jebao marine reef - marine, aquarium - £54.99
Feed mode disables • Pump minutes fluval • Cycle aquarium filter - Free postage - New and Used
Feed mode disables • Pump minutes fluval • Cycle aquarium filter - Free postage - New and Used
Ecotech vortech mp40 pump wave - ecotech, - £187.89
Ecotech marine vortech • Mp40 quietdrive boxed • Fully working sale - Free postage - New and Used
Ecotech marine vortech • Mp40 quietdrive boxed • Fully working sale - Free postage - New and Used
Fish tank aquarium cabinet - aquarium, - £599.99
This 300 litre • Gallon 4ft fish • Tank perfect bring - Free postage - New and Used
This 300 litre • Gallon 4ft fish • Tank perfect bring - Free postage - New and Used
Instant ocean marine salt - instant, - £57.95
Instant ocean synthetic • Sea salt 20kg • 10kg such have - Free postage - New and Used
Instant ocean synthetic • Sea salt 20kg • 10kg such have - Free postage - New and Used
Reef crystals marine - crystals, 2kg - £298.95
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Fish tank test - 6-in-1, - £8.95
Our all one • Aquarium test strip • Combines these six - Free postage - New and Used
Our all one • Aquarium test strip • Combines these six - Free postage - New and Used
Hidom aquarium air pump - hidom, fish - £8.45
Hidom air pump • Series oxygenate your • Aquarium efficiently quietly - Free postage - New and Used
Hidom air pump • Series oxygenate your • Aquarium efficiently quietly - Free postage - New and Used
Diversa aquarium with - stand, / - £515.95
This way you • Will know exactly • When expect your - Free postage - New and Used
This way you • Will know exactly • When expect your - Free postage - New and Used
Instant ocean marine salt - ocean, - £279.99
Instant ocean • 20kg boxes 2kg • Salt dechlorinated water - Free postage - New and Used
Instant ocean • 20kg boxes 2kg • Salt dechlorinated water - Free postage - New and Used
Allpondsolutions wave maker - wave, - £14.99
Allpondsolutions range wavemaker • Powerheads have 360 • Degree rotating mount - Free postage - New and Used
Allpondsolutions range wavemaker • Powerheads have 360 • Degree rotating mount - Free postage - New and Used
Waterlife cuprazin marine fish - waterlife, - £6.99
Effectively combatswhitespot oodinium • Fungal infections helping • Keep marine fish - Free postage - New and Used
Effectively combatswhitespot oodinium • Fungal infections helping • Keep marine fish - Free postage - New and Used
Aquaforest reef salt marine - reef, - £69.99
Fully synthetic marine • Salt created aquacultured • Corals this formula - Free postage - New and Used
Fully synthetic marine • Salt created aquacultured • Corals this formula - Free postage - New and Used
Titanium heater elitech - d-d, - £80.99
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Premium egg crate - premium, duty - £3.69
This common coral • Tables frag racks • Etc finest filters - Free postage - New and Used
This common coral • Tables frag racks • Etc finest filters - Free postage - New and Used
Tropic marin all for reef - tropic, - £21.49
Tropic marin all • Reef liquid 500ml • Contain 000 calcium - Free postage - New and Used
Tropic marin all • Reef liquid 500ml • Contain 000 calcium - Free postage - New and Used
Nannochloropsis oculata - nannochloropsis, - £20.99
This hardy phytoplankton • Species prized its • High nutritional value - Free postage - New and Used
This hardy phytoplankton • Species prized its • High nutritional value - Free postage - New and Used
Hidom aquarium air pump - aquarium, - £14.99
Aquarium air pump • Hidom ultra quiet • Tropical marine fish - Free postage - New and Used
Aquarium air pump • Hidom ultra quiet • Tropical marine fish - Free postage - New and Used
Hepo led marine - hepo, light - £36.99
These lights are • 12000k ideal marine • Aquarium light spectrum - Free postage - New and Used
These lights are • 12000k ideal marine • Aquarium light spectrum - Free postage - New and Used
Fluval fx4 canister filter - fluval, - £199.99
Fluval motor head • Fx4 external filter • Seal gasket 307 - Free postage - New and Used
Fluval motor head • Fx4 external filter • Seal gasket 307 - Free postage - New and Used
Caribsea life rock shapes - shapes, 20lb - £143.50
Fantastic shapes incredible • Colors well check • Out new liferock - Free postage - New and Used
Fantastic shapes incredible • Colors well check • Out new liferock - Free postage - New and Used
Marine filter food coral zoas - filter, - £16.99
Marine snow invert • Coral food reef • Zoo phyto plankton - Free postage - New and Used
Marine snow invert • Coral food reef • Zoo phyto plankton - Free postage - New and Used
Salifert test kit - test, - £9.99
Salifert profi test • Kits 100 200 • Tests - Free postage - New and Used
Salifert profi test • Kits 100 200 • Tests - Free postage - New and Used
Tropic marin all for - tropic, - £22.99
Comprehensive mineral solution • Supplies calcium magnesium • Strontium carbonate hardness - Free postage - New and Used
Comprehensive mineral solution • Supplies calcium magnesium • Strontium carbonate hardness - Free postage - New and Used
Aquarium tank controller - aquarium, - £286.70
Xepta auto balance • Reef marine tank • Controller very good - Free postage - New and Used
Xepta auto balance • Reef marine tank • Controller very good - Free postage - New and Used
Hidom aquarium air pump fish - hidom, - £12.99
Silent aquarium air • Pump tropical marine • Fish tanks transform - Free postage - New and Used
Silent aquarium air • Pump tropical marine • Fish tanks transform - Free postage - New and Used
Aqua one minireef marine - one, - £519.99
Aqua one minireef • Aquarium cabinet 90l • Features glass sump - Free postage - New and Used
Aqua one minireef • Aquarium cabinet 90l • Features glass sump - Free postage - New and Used
Marine reef aquarium - reef, - £212.00
Filter sock holder • Socks - Free postage - New and Used
Filter sock holder • Socks - Free postage - New and Used
4ft fish tank - 4ft, - £699.99
Boasting luxurious matt • White cabinet curved • Glass exterior walnut - Free postage - New and Used
Boasting luxurious matt • White cabinet curved • Glass exterior walnut - Free postage - New and Used
Titanium heater 150 watt - heater, - £37.09
This 150w heater • From suitable aquariums • 150 litres combines - Free postage - New and Used
This 150w heater • From suitable aquariums • 150 litres combines - Free postage - New and Used
Caribsea ocean direct natural - ocean, - £46.95
Live sand • Biologically active aquarium • Substrate that stands - Free postage - New and Used
Live sand • Biologically active aquarium • Substrate that stands - Free postage - New and Used
Bubble magus curve - magus, extreme - £224.99
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
120cm aquarium light - uk, - £35.99
Woino full spectrum • Color led aquarium • Lighting brightness levels - Free postage - New and Used
Woino full spectrum • Color led aquarium • Lighting brightness levels - Free postage - New and Used
Fluval sea evo - fluval, - £159.99
Fluval evo aquarium • Set modern rectangular • Glass tank indoor - Free postage - New and Used
Fluval evo aquarium • Set modern rectangular • Glass tank indoor - Free postage - New and Used
90cm aquarium light - 35', - £35.88
High color rendering • Index brings out • Vivid natural colors - Free postage - New and Used
High color rendering • Index brings out • Vivid natural colors - Free postage - New and Used
Popbloom full spectrum led - full, - £106.80
Marine reef tank • Power adaptor fresh • Water - Free postage - New and Used
Marine reef tank • Power adaptor fresh • Water - Free postage - New and Used
Try this: aquarium heater | fish tanks | juwel trigon 350 | hexagonal fish tank | marine aquarium tank | nano marine aquarium | shrimp | vortech | 3ft aquarium | 5 ft aquarium
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Everything you need to know about marine fish tank
Whether you are looking for a brand-new or second-hand marine fish tank, 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 £2.99, while premium listings can reach £1050 — giving you a wide budget spread to work with. The average price of £202.71 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.