Bio balls
Bio balls for sale on Ireland's largest auction and classifieds sites
Bio balls aquarium fish tank - bio, - £69.99
Help increase our • Product range have • Recently more than - Free postage - New and Used
Help increase our • Product range have • Recently more than - Free postage - New and Used
32mm bio balls - balls, pond - £59.99
These are our • Larger bio balls • Supplied boxes 150pcs - Free postage - New and Used
These are our • Larger bio balls • Supplied boxes 150pcs - Free postage - New and Used
Bio balls aquarium fish - balls, - £7.99
Overall very efficient • Way improving water • Quality 36w pll - Free postage - New and Used
Overall very efficient • Way improving water • Quality 36w pll - Free postage - New and Used
Maxspect mantis bio sphere - maxspect/mantis, bio-sphere - £11.50
Maxspect bio sphere • Holder 3x5 pegs • 1kg capacity specifically - Free postage - New and Used
Maxspect bio sphere • Holder 3x5 pegs • 1kg capacity specifically - Free postage - New and Used
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Bio filter media - filter, - £59.99
High porosity ceramic • Rings aquarium pond • Filtration removes nh4 - Free postage - New and Used
High porosity ceramic • Rings aquarium pond • Filtration removes nh4 - Free postage - New and Used
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48 listings · from £1.19 · avg £18.69
⚠️ These listings were last updated more than 13 days ago.
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Browse 48 bio balls listings currently in our index. Prices range from £1.19 to £90, with an average of £18.69. 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 bio balls →
100 bio balls sump - balls, - £8.99
Not clean bioballs • Once they are • Cycled you will - Free postage - New and Used
Not clean bioballs • Once they are • Cycled you will - Free postage - New and Used
500g ceramic bio beads - ceramic, - £8.95
Specifications 500g bags • Contain beads 10mm • Nitrifying bacteria quartz - Free postage - New and Used
Specifications 500g bags • Contain beads 10mm • Nitrifying bacteria quartz - Free postage - New and Used
Premium aquarium bio balls - aquarium, - £11.99
Weight options 100g • 250g 500g ball • Features aunique open - Free postage - New and Used
Weight options 100g • 250g 500g ball • Features aunique open - Free postage - New and Used
500g volcanic rock bio balls - rock, - £6.95
Itshighly porous structure • Allows maximum surface • Area microbial colonization - Free postage - New and Used
Itshighly porous structure • Allows maximum surface • Area microbial colonization - Free postage - New and Used
Plastic bio balls - bio, with - £13.95
Bio balls can • Used aquarium pond • Filter systems help - Free postage - New and Used
Bio balls can • Used aquarium pond • Filter systems help - Free postage - New and Used
Aquarium filter media - aquarium, bio - £8.95
Bio carbon eliminates • Odours discoloration dissolved • Organic wastes from - Free postage - New and Used
Bio carbon eliminates • Odours discoloration dissolved • Organic wastes from - Free postage - New and Used
1000 bio balls sump - 1000, - £27.99
1000 bioballs not • Once they are • Cycled you will - Free postage - New and Used
1000 bioballs not • Once they are • Cycled you will - Free postage - New and Used
Aqqa aquarium double - (m), - £22.86
Aqqa aquarium double • Sponge power filter • Suitable saltwater fresh - Free postage - New and Used
Aqqa aquarium double • Sponge power filter • Suitable saltwater fresh - Free postage - New and Used
Bio ceramic mini balls - ceramic, - £12.99
These bacteria break • Downammonium nh4 andnitrite • No2 into less - Free postage - New and Used
These bacteria break • Downammonium nh4 andnitrite • No2 into less - Free postage - New and Used
Maxspect mantis bio - maxspect/mantis, bio-block - £9.99
Model compatible maxspect • Nano tech bio • Spheres crafted bothfreshwater - Free postage - New and Used
Model compatible maxspect • Nano tech bio • Spheres crafted bothfreshwater - Free postage - New and Used
Maxspect mantis bio sphere - maxspect/mantis, bio-sphere - £13.00
Maxspect bio sphere • Spheres 3x3 pegs • Holds 1kg capacity - Free postage - New and Used
Maxspect bio sphere • Spheres 3x3 pegs • Holds 1kg capacity - Free postage - New and Used
Aquarium filter media wool - filter, - £8.95
Free net bag • This can effect • Health fish system - Free postage - New and Used
Free net bag • This can effect • Health fish system - Free postage - New and Used
External aquarium filter - external, - £12.99
Suitable range external • Filters but also • Fit many other - Free postage - New and Used
Suitable range external • Filters but also • Fit many other - Free postage - New and Used
Bio balls media - bio, aquarium - £12.45
Maintenance rinse thoroughly • Prior use until • Water runs clear - Free postage - New and Used
Maintenance rinse thoroughly • Prior use until • Water runs clear - Free postage - New and Used
Ceramic bio beads - beads, aquarium - £8.95
Pisces active bio • Beads creates large • Surface area beneficial - Free postage - New and Used
Pisces active bio • Beads creates large • Surface area beneficial - Free postage - New and Used
Bio balls plastic 56mm - bio, 16~56mm - £1.67
Filter aquarium limited • Space placing biochemical • Balls will not - Free postage - New and Used
Filter aquarium limited • Space placing biochemical • Balls will not - Free postage - New and Used
Aquarium lightweight bio - lightweight, balls - £8.95
Highly porous bio • Balls per bag • Lightweight high surface - Free postage - New and Used
Highly porous bio • Balls per bag • Lightweight high surface - Free postage - New and Used
Maxspect nano tech bio spheres - maxspect, - £23.64
Sphere 1kg live • Rock - Free postage - New and Used
Sphere 1kg live • Rock - Free postage - New and Used
Aquarium filter media - aquarium, - £12.45
Maintenance rinse thoroughly • Prior use until • Water runs clear - Free postage - New and Used
Maintenance rinse thoroughly • Prior use until • Water runs clear - Free postage - New and Used
100 pcs bio - 100, - £12.25
Lotsdonxia 100 pcs • Bio balls filter • Media 1.6cm porous - Free postage - New and Used
Lotsdonxia 100 pcs • Bio balls filter • Media 1.6cm porous - Free postage - New and Used
Bio balls aquarium fish tank - balls, - £1.19
Filter aquarium limited • Space placing biochemical • Balls will not - Free postage - New and Used
Filter aquarium limited • Space placing biochemical • Balls will not - Free postage - New and Used
100g 250g types aquarium - 100g, - £7.82
Material aquarium pond • Bio balls provide • Biological filtration removing - Free postage - New and Used
Material aquarium pond • Bio balls provide • Biological filtration removing - Free postage - New and Used
Bio balls aquarium - bio, bb‑40 - £7.59
Product bio balls • Provide large surface • Area beneficial bacteria - Free postage - New and Used
Product bio balls • Provide large surface • Area beneficial bacteria - Free postage - New and Used
Stilted bio sphere - bio-sphere, bio-ball - £13.50
Specifically maxspect mantis • Bio spheres stilted • Version raise base - Free postage - New and Used
Specifically maxspect mantis • Bio spheres stilted • Version raise base - Free postage - New and Used
Bio ceramic mini balls - mini, - £24.99
These bacteria break • Downammonium nh4 andnitrite • No2 into less - Free postage - New and Used
These bacteria break • Downammonium nh4 andnitrite • No2 into less - Free postage - New and Used
Two maxspect bio - two, media - £15.00
- Free postage - New and Used
- Free postage - New and Used
Stilted bio sphere - stilted, bio-sphere - £15.00
Specifically maxspect mantis • Bio spheres stilted • Version raise base - Free postage - New and Used
Specifically maxspect mantis • Bio spheres stilted • Version raise base - Free postage - New and Used
Aquarium pond filter bio - aquarium, - £3.31
Aquarium bio balls • New box pack • Have several boxes - Free postage - New and Used
Aquarium bio balls • New box pack • Have several boxes - Free postage - New and Used
Ceramic bio rings aquarium - bio, - £7.95
Result clean healthy • Water through optimal • Filtration aquarium food - Free postage - New and Used
Result clean healthy • Water through optimal • Filtration aquarium food - Free postage - New and Used
Cloverleaf absolute pearls - cloverleaf, - £12.90
Cloverleaf absolute aquarium • Balls plus free • Biological nitrifying bacteria - Free postage - New and Used
Cloverleaf absolute aquarium • Balls plus free • Biological nitrifying bacteria - Free postage - New and Used
Reefculture marine pure - reefculture, - £48.34
Marinepure spheres quarts • Gallon such have • Huge wealth experience - Free postage - New and Used
Marinepure spheres quarts • Gallon such have • Huge wealth experience - Free postage - New and Used
10pcs nylon aquarium - nylon, - £3.99
10pcs per set • Excellent aquarium cleaning • Filter adopt special - Free postage - New and Used
10pcs per set • Excellent aquarium cleaning • Filter adopt special - Free postage - New and Used
Maxspect nano tech - nano, spheres - £32.25
Maxspect nano tech • Blocks bio block • Excel establishing bacterial - Free postage - New and Used
Maxspect nano tech • Blocks bio block • Excel establishing bacterial - Free postage - New and Used
Super sized maxspect - super, - £22.00
Total this holds • Bio balls whilst • Remaining compact possible - Free postage - New and Used
Total this holds • Bio balls whilst • Remaining compact possible - Free postage - New and Used
Fluval biomax bio rings - bio, - £9.59
Pond plant basket • Labs aquarium stabiliser • Planet evolution aqua - Free postage - New and Used
Pond plant basket • Labs aquarium stabiliser • Planet evolution aqua - Free postage - New and Used
Plastic bio balls including - plastic, - £5.99
16mm 26mm 36mm • Bio balls available • Item type aquarium - Free postage - New and Used
16mm 26mm 36mm • Bio balls available • Item type aquarium - Free postage - New and Used
Bio media bundle maxspect - bundle, - £29.99
Maxspect nano tech • Bio sphere holder • Pegs purpose built - Free postage - New and Used
Maxspect nano tech • Bio sphere holder • Pegs purpose built - Free postage - New and Used
Maxspect nano tech bio spheres - tech, - £23.64
Sphere 1kg live • Rock bio spheres • Blocks excel establishing - Free postage - New and Used
Sphere 1kg live • Rock bio spheres • Blocks excel establishing - Free postage - New and Used
500g ceramic bio balls for - bio, - £13.02
Suitable filtration fish • Tanks aquariums when • Used replace original - Free postage - New and Used
Suitable filtration fish • Tanks aquariums when • Used replace original - Free postage - New and Used
Pond filter balls bio - k3, - £25.99
- Free postage - New and Used
- Free postage - New and Used
Kintama bio balls ltr - bio, - £90.00
Kintama bio balls • Pumice alfagrog - Free postage - New and Used
Kintama bio balls • Pumice alfagrog - Free postage - New and Used
Biosphere bio balls - biosphere, - £11.87
Bio balls • Filter media holder • Pegs all together - Free postage - New and Used
Bio balls • Filter media holder • Pegs all together - Free postage - New and Used
Aquarium fish tank filter - tank, - £12.99
These bacteria break • Downammonium nh4 andnitrite • No2 into less - Free postage - New and Used
These bacteria break • Downammonium nh4 andnitrite • No2 into less - Free postage - New and Used
Try this: biorb 60 | biorb air | biorb aquarium | biorb stand | bow front aquarium | boyu aquarium | boyu fish tank | brine shrimp eggs | bubble tubes | cichlid fish tank
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Everything you need to know about bio balls
Whether you are looking for a brand-new or second-hand bio balls, 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 £1.19, while premium listings can reach £90 — giving you a wide budget spread to work with. The average price of £18.69 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.