Fish tank rocks
Fish tank rocks for sale on Ireland's largest auction and classifieds sites
Aquarium rock fish - fish, tank - £57.99
Not affect water • Nor its cloudiness • Suitable all types - Free postage - New and Used
Not affect water • Nor its cloudiness • Suitable all types - Free postage - New and Used
Aquarium stone rock - aquarium, - £62.63
Dark grey rock • 20kg set select • Carefully selected pieces - Free postage - New and Used
Dark grey rock • 20kg set select • Carefully selected pieces - Free postage - New and Used
Aquarium stone seiryu rock - stone, - £107.99
Grey mountian rock • 25kg set select • Carefully selected pieces - Free postage - New and Used
Grey mountian rock • 25kg set select • Carefully selected pieces - Free postage - New and Used
Aquarium seiryu rock fish tank - fish, - £35.63
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
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Dragon rock aquarium stone - aquarium, - £21.59
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
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48 listings · from £6.59 · avg £38.58
⚠️ These listings were last updated more than 98 days ago.
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Browse 48 fish tank rocks listings currently in our index. Prices range from £6.59 to £107.99, with an average of £38.58. 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 fish tank rocks →
Aquarium stone rock - aquarium, - £68.03
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Aquarium stone rock - aquarium, - £29.15
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Fish tank stone aquarium - aquarium, rock - £49.99
Stones will require • Rinsing before they • Can placed aquarium - Free postage - New and Used
Stones will require • Rinsing before they • Can placed aquarium - Free postage - New and Used
Aquarium rock natural fish - aquarium, - £29.15
Selected aquarium rock • High repeatable quality • Shades green characteristic - Free postage - New and Used
Selected aquarium rock • High repeatable quality • Shades green characteristic - Free postage - New and Used
Aquarium stone fish tank - stone, - £28.99
Lava rocks malawi • Sets they also • Look good light - Free postage - New and Used
Lava rocks malawi • Sets they also • Look good light - Free postage - New and Used
Aquarium stone slate fish tank - stone, - £39.99
Shelter caves great • Hiding places that • Fish they are - Free postage - New and Used
Shelter caves great • Hiding places that • Fish they are - Free postage - New and Used
Natural ocean rock 20kg large - natural, - £59.95
Ocean rock • More suitable marine • Hardwater cichlids brackish - Free postage - New and Used
Ocean rock • More suitable marine • Hardwater cichlids brackish - Free postage - New and Used
Zebra mountain rocks decor - zebra, - £39.95
Zebra mountain rock • Striking versatile material • Popular among aquascaping - Free postage - New and Used
Zebra mountain rock • Striking versatile material • Popular among aquascaping - Free postage - New and Used
Aquarium rock natural - rock, fish - £46.43
Wood stone 15kg • Set select carefully • Selected pieces only - Free postage - New and Used
Wood stone 15kg • Set select carefully • Selected pieces only - Free postage - New and Used
Aquarium rock stone decoration - rock, - £46.43
Dark grey rock • 10kg set select • Carefully selected pieces - Free postage - New and Used
Dark grey rock • 10kg set select • Carefully selected pieces - Free postage - New and Used
Aquarium rock fish tank - rock, - £86.39
May constitute basic • Building block aquariums • Stone rocky decor - Free postage - New and Used
May constitute basic • Building block aquariums • Stone rocky decor - Free postage - New and Used
Aquarium rock fish - aquarium, tank - £16.19
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
Grey natural stone rock - grey, - £25.79
Provides ideal hideaway • Cave swim through • Grey natural stone - Free postage - New and Used
Provides ideal hideaway • Cave swim through • Grey natural stone - Free postage - New and Used
Aqarium rock fish tank stones - rock, - £16.19
Majority stones this • Type are very • Hollow have nice - Free postage - New and Used
Majority stones this • Type are very • Hollow have nice - Free postage - New and Used
Aquarium rock stone lava fish - rock, - £18.99
Natural volcanic rocks • Are excellent choice • Any aquarium their - Free postage - New and Used
Natural volcanic rocks • Are excellent choice • Any aquarium their - Free postage - New and Used
Aquarium slate fish - tank, rock - £24.99
Slate perfect creating • Caves lining back • Wall aquarium doesn - Free postage - New and Used
Slate perfect creating • Caves lining back • Wall aquarium doesn - Free postage - New and Used
Dragon rock aquarium stone - rock, - £35.63
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
Castle rocks cave - cave, aquarium - £34.99
This would create • Nice underwater landscape • Give depth interest - Free postage - New and Used
This would create • Nice underwater landscape • Give depth interest - Free postage - New and Used
Aquarium fish tank gravel - aquarium, - £34.95
Our aquarium gravel • Available 2kg 10kg • 20kg options you - Free postage - New and Used
Our aquarium gravel • Available 2kg 10kg • 20kg options you - Free postage - New and Used
Dragon stone rock - rock, effect - £19.98
Cave fish tank • Decoration hide arch • Sculptured dragon stone - Free postage - New and Used
Cave fish tank • Decoration hide arch • Sculptured dragon stone - Free postage - New and Used
Four slate rock pieces - four, - £13.95
Four natural slate • Tiles aquarium reptile • Pieces ideal textured - Free postage - New and Used
Four natural slate • Tiles aquarium reptile • Pieces ideal textured - Free postage - New and Used
Fish tank ornaments - fish, for - £7.99
Ancient chinese warrior • Can provide spot • Nitrifying bacteria attach - Free postage - New and Used
Ancient chinese warrior • Can provide spot • Nitrifying bacteria attach - Free postage - New and Used
Aquarium stone seiryu rock - aquarium, - £62.63
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Aquarium rock seiryu stone - rock, - £46.43
Grey mountian rock • 10kg set select • Carefully selected pieces - Free postage - New and Used
Grey mountian rock • 10kg set select • Carefully selected pieces - Free postage - New and Used
Aquarium dragon rock stone - aquarium, - £86.39
Dragon rock 20kg • Set select carefully • Selected pieces only - Free postage - New and Used
Dragon rock 20kg • Set select carefully • Selected pieces only - Free postage - New and Used
Aquarium seiryu rock fish tank - seiryu, - £24.83
Grey mountian rock • 3kg set select • Carefully selected pieces - Free postage - New and Used
Grey mountian rock • 3kg set select • Carefully selected pieces - Free postage - New and Used
Aquarium rock fish tank - fish, stone - £29.15
Great natural base • Building block aquariums • Stone rocky decor - Free postage - New and Used
Great natural base • Building block aquariums • Stone rocky decor - Free postage - New and Used
Fish cave aquarium - cave, ornament - £6.59
Aquarium decorative rocks • This hidden cave • Creates visual feast - Free postage - New and Used
Aquarium decorative rocks • This hidden cave • Creates visual feast - Free postage - New and Used
Aquarium slate fish tank - slate, - £57.23
White slate 25kg • Set thin tiles • Ready layed aquarium - Free postage - New and Used
White slate 25kg • Set thin tiles • Ready layed aquarium - Free postage - New and Used
Fish tank orginal - tank, - £15.84
This listing features • Collection original stone • Ornaments specifically decorating - Free postage - New and Used
This listing features • Collection original stone • Ornaments specifically decorating - Free postage - New and Used
Large new natural flat - natural, - £13.95
They can used • Other rocks slate • Make ledges crevices - Free postage - New and Used
They can used • Other rocks slate • Make ledges crevices - Free postage - New and Used
Large rock mountain aquarium - rock, - £45.98
- Free postage - New and Used
- Free postage - New and Used
Aquarium rock fish - aquarium, - £16.19
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
They also look • Good light ground • Tank tanganyika malawi - Free postage - New and Used
Fish tank rock natural - tank, - £21.59
Dark grey rock • 3kg set select • Carefully selected pieces - Free postage - New and Used
Dark grey rock • 3kg set select • Carefully selected pieces - Free postage - New and Used
Aquarium rock fish tank - rock, - £43.19
Rainbow slate 10kg • Set thin tiles • Ready layed aquarium - Free postage - New and Used
Rainbow slate 10kg • Set thin tiles • Ready layed aquarium - Free postage - New and Used
Aquarium slate fish tank - tank, rock - £17.99
Black slate 3kg • Perfect creating caves • Lining back wall - Free postage - New and Used
Black slate 3kg • Perfect creating caves • Lining back wall - Free postage - New and Used
Aquarium stone slate - stone, tank - £62.99
Let know you • Have any individual • Wishes regards shape - Free postage - New and Used
Let know you • Have any individual • Wishes regards shape - Free postage - New and Used
Dry ocean reef - reef, 20kg - £59.95
Suitable cichlid hard • Water aquariums clean • Safe marine reef - Free postage - New and Used
Suitable cichlid hard • Water aquariums clean • Safe marine reef - Free postage - New and Used
Ista water plant rock - water, - £7.99
Ista water plant • Rocks are ideal • Roots providing natural - Free postage - New and Used
Ista water plant • Rocks are ideal • Roots providing natural - Free postage - New and Used
Aquarium lava rock black - lava, black, - £24.99
Highly detailed comparitively • Light won displace • Huge amounts water - Free postage - New and Used
Highly detailed comparitively • Light won displace • Huge amounts water - Free postage - New and Used
Aquarium rock seiryu - aquarium, - £53.99
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Selected aquarium rock • High repeatable quality • Shades grey few - Free postage - New and Used
Aquarium rock stone - rock, - £53.99
Lava rocks 100 • Natural they also • Look good light - Free postage - New and Used
Lava rocks 100 • Natural they also • Look good light - Free postage - New and Used
Aquarium rock natural fish - aquarium, - £39.95
10kg 60cm 2ft • Length wood stone • Set geat natural - Free postage - New and Used
10kg 60cm 2ft • Length wood stone • Set geat natural - Free postage - New and Used
Try this: floating magnetic | fluval fx | fluval u3 filter | fluval fish tank pump | huge fish tank | hydor | interpet filter | interpet aquarium lighting | juwel light unit | juwel fish tank pump
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Everything you need to know about fish tank rocks
Whether you are looking for a brand-new or second-hand fish tank rocks, 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 £6.59, while premium listings can reach £107.99 — giving you a wide budget spread to work with. The average price of £38.58 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.