Marine aquarium
Marine aquarium 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
Egg crate for aquarium fish - egg, - £3.49
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
Diversa aquarium with - diversa, - £459.99
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
Fluval sea evo - sea, - £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
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Fluval sea evo 52l - evo, - £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
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48 listings · from £3.49 · avg £114.21
Browse 48 marine aquarium listings currently in our index. Prices range from £3.49 to £599.99, with an average of £114.21. 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 aquarium →
Instant ocean marine - instant, - £104.99
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
Instant ocean marine salt - marine, - £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
3000l marine aquarium - marine, wave - £12.99
This all pond • Solutions 3000 wave • Maker powerhead has - Free postage - New and Used
This all pond • Solutions 3000 wave • Maker powerhead has - Free postage - New and Used
Diversa aquarium with - diversa, - £459.99
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
Aquarium fish transport bags - transport, - £4.99
Strong clear polythene • Bags are puncture • Proof safe your - Free postage - New and Used
Strong clear polythene • Bags are puncture • Proof safe your - Free postage - New and Used
Tropic marin all for - all, reef - £33.45
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
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
Hepo led marine - led, aquarium - £41.99
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 evo gallon - evo, 13.5 - £208.70
Used good condition • Minimal scratches comes • Heaters stock light - Free postage - New and Used
Used good condition • Minimal scratches comes • Heaters stock light - Free postage - New and Used
20w marine aquarium - uv, - £78.70
20w good working • Order - Free postage - New and Used
20w good working • Order - Free postage - New and Used
Red sea reefer 425xl marine - reefer, - £511.60
Full marine setup • Red sea reefer • 425 tank reef - Free postage - New and Used
Full marine setup • Red sea reefer • 425 tank reef - Free postage - New and Used
Blue marine reef aquarium - blue, - £8.99
Blue marine reef • Power 3500 multi • Aquariums aquarium air - Free postage - New and Used
Blue marine reef • Power 3500 multi • Aquariums aquarium air - Free postage - New and Used
Hidom external aquarium filter - hidom, - £10.95
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
Marine aquarium nori seaweed - aquarium, - £3.99
Perfect tangs other • Marine fish inverts • Made from 100 - Free postage - New and Used
Perfect tangs other • Marine fish inverts • Made from 100 - Free postage - New and Used
Fluval reef nano led - fluval, light - £99.99
Fluval sea marine • Nano led 3.0 • 25w reef aquarium - Free postage - New and Used
Fluval sea marine • Nano led 3.0 • 25w reef aquarium - Free postage - New and Used
Premium egg crate heavy duty - crate, - £4.49
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
Fluval sea marine led - fluval, - £78.70
Fluval sea marine • 3.0 led • Leds are hobbyists - Free postage - New and Used
Fluval sea marine • 3.0 led • Leds are hobbyists - Free postage - New and Used
Tims ammonium chloride - dr, - £11.99
Tims ammonium chloride • Made reagent grade • Materials perfect fishless - Free postage - New and Used
Tims ammonium chloride • Made reagent grade • Materials perfect fishless - Free postage - New and Used
Reef crystals marine salt 2kg - crystals, - £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
60cm aquarium marine fish - aquarium/marine, - £8.25
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
Jebao marine aquarium auto - marine, - £68.99
Jebao jecod automatic • Marine reef dosing • Pump choice channel - Free postage - New and Used
Jebao jecod automatic • Marine reef dosing • Pump choice channel - Free postage - New and Used
Fluval sea evo marine aquarium - evo, - £254.99
Don let its • Fool you tank • Heater option includes - Free postage - New and Used
Don let its • Fool you tank • Heater option includes - Free postage - New and Used
Allpondsolutions wave maker - wave, - £15.99
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
Hidom controllable pump for - controllable, dc - £69.99
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
Aqua one reefsys 326 - one, marine - £104.70
Sadly took our • Tank down this • Sold only stand - Free postage - New and Used
Sadly took our • Tank down this • Sold only stand - Free postage - New and Used
Redsea 600 skimmer - redsea, - £89.10
Redsea reefer rsk • 600 protein skimmer • Good condition works - Free postage - New and Used
Redsea reefer rsk • 600 protein skimmer • Good condition works - Free postage - New and Used
Popbloom rl60 rl90 marine led - rl60, - £138.23
Marine reef tank • Fresh water - Free postage - New and Used
Marine reef tank • Fresh water - Free postage - New and Used
Ha6 sealant silicone - ha6, rtv - £59.99
High quality non • Automotive silicone sealant • Apply using standard - Free postage - New and Used
High quality non • Automotive silicone sealant • Apply using standard - Free postage - New and Used
Hidom aquarium air pump - hidom, - £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
120cm aquarium light - 90, - £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
Titanium heater elitech - d-d, - £81.99
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
Aqua medic armatus - aqua, - £83.90
Aqua medic armatus • All one aquarium • Fish tank compact - Free postage - New and Used
Aqua medic armatus • All one aquarium • Fish tank compact - Free postage - New and Used
Atm colony marine nitrifying - atm, - £28.90
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
Seachem prime water - seachem, - £14.99
Contains binder which • Renders ammonia nitrite • Nitrate non toxic - Free postage - New and Used
Contains binder which • Renders ammonia nitrite • Nitrate non toxic - Free postage - New and Used
Red sea reefer 350 - red, aquarium - £207.66
Comes sump pipe • Work fill tank • Netted lid has - Free postage - New and Used
Comes sump pipe • Work fill tank • Netted lid has - Free postage - New and Used
Salifert test kit marine - kit, - £12.89
Salifert profi test • Kits 100 200 • Tests - Free postage - New and Used
Salifert profi test • Kits 100 200 • Tests - Free postage - New and Used
Fish tank aquarium equipment - fish, - £187.90
Job lot all • Working order some • Even not used - Free postage - New and Used
Job lot all • Working order some • Even not used - Free postage - New and Used
Nyos torq reactor marine - reactor, - £55.00
Nyos torq reactor • Marine aquarium dock • Condition used dispatched - Free postage - New and Used
Nyos torq reactor • Marine aquarium dock • Condition used dispatched - Free postage - New and Used
Jbl combiset marine aquarium - jbl, - £39.95
Jbl combiset test • Kit marine such • Have huge wealth - Free postage - New and Used
Jbl combiset test • Kit marine such • Have huge wealth - Free postage - New and Used
Bond black ha6 - bond, - £8.50
Rtv silicone sealant • Cure type acetoxy • Excellent adhesion most - Free postage - New and Used
Rtv silicone sealant • Cure type acetoxy • Excellent adhesion most - Free postage - New and Used
Smart micro laser auto top - d-d, - £50.00
Came tank have • Been using faultlessly • But upgraded redsea - Free postage - New and Used
Came tank have • Been using faultlessly • But upgraded redsea - Free postage - New and Used
Jebao marine reef aquarium - marine, - £48.99
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
Jebao wave maker wavemaker - jebao, ow - £99.99
Reef hidom aquarium • Wave maker wavemaker • Pompa acqua per - Free postage - New and Used
Reef hidom aquarium • Wave maker wavemaker • Pompa acqua per - Free postage - New and Used
Try this: reef aquarium | nano reef | fish tank pump | aquaone tank | tropical fish tank accessories | large corner aquarium | large castle aquarium ornament | fluval edge | large aquarium tank | rena fish tank
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Everything you need to know about marine aquarium
Whether you are looking for a brand-new or second-hand marine aquarium, 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 £3.49, while premium listings can reach £599.99 — giving you a wide budget spread to work with. The average price of £114.21 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.