Marine algae
Marine algae for sale on Ireland's largest auction and classifieds sites
Marine macroalgae frag - macroalgae, macro - £7.99
Have many most • Popular macroalgae such • Aschaetomorpha chaeto andcaulerpa - Free postage - New and Used
Have many most • Popular macroalgae such • Aschaetomorpha chaeto andcaulerpa - Free postage - New and Used
Marine macro algae - , dragons - £12.40
Marine macro algae • Dragons breath this • Adds touch colour - Free postage - New and Used
Marine macro algae • Dragons breath this • Adds touch colour - Free postage - New and Used
Pack lacura marine day - pack, - £17.99
Pack lacura marine • Day cream collagen • Algae extract 50ml - Free postage - New and Used
Pack lacura marine • Day cream collagen • Algae extract 50ml - Free postage - New and Used
Chaetomorpha cheatomorpha - £8.99
This great strain • Chaeto really healthy • Thriving system you - Free postage - New and Used
This great strain • Chaeto really healthy • Thriving system you - Free postage - New and Used
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Red ogo marine - red, algae - £20.00
Red ogo gracilaria • Parvispora attractive hawaiian • Macro algae found - Free postage - New and Used
Red ogo gracilaria • Parvispora attractive hawaiian • Macro algae found - Free postage - New and Used
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48 listings · from £4.95 · avg £19.59
Browse 48 marine algae listings currently in our index. Prices range from £4.95 to £120, with an average of £19.59. 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 algae →
Marine macro algae - £17.25
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Marine macro algae halymenia - marine, - £22.50
Cutting from colony • Shown photographs also • Grow all our - Free postage - New and Used
Cutting from colony • Shown photographs also • Grow all our - Free postage - New and Used
Codium macro algae for - macro, - £12.00
Unlike fast spreading • Species codium grows • Compact finger like - Free postage - New and Used
Unlike fast spreading • Species codium grows • Compact finger like - Free postage - New and Used
Gracilaria hayi - hayi, (red - £15.00
Gracilaria hayi also • Known red bush • Macroalgae add bold - Free postage - New and Used
Gracilaria hayi also • Known red bush • Macroalgae add bold - Free postage - New and Used
Marine macro algae caulerpa - marine, algae, - £17.50
This sale healed • Growing holdfast runner • Stolen cutting taken - Free postage - New and Used
This sale healed • Growing holdfast runner • Stolen cutting taken - Free postage - New and Used
Blue hypnea macro algae for - hypnea, - £15.00
Its fine branching • Structure soft bushy • Growth blue hypnea - Free postage - New and Used
Its fine branching • Structure soft bushy • Growth blue hypnea - Free postage - New and Used
Red ogo gracilaria - gracilaria, algae - £13.00
Gracilaria this species • Features soft bushy • Fronds that gently - Free postage - New and Used
Gracilaria this species • Features soft bushy • Fronds that gently - Free postage - New and Used
Rare marine macro - macro, mix - £25.66
Highly sought after • Species not algae • Have constantly available - Free postage - New and Used
Highly sought after • Species not algae • Have constantly available - Free postage - New and Used
Reef flux green - reef, rx - £25.49
Everything else remains • Unaffected kills green • Algae derbesia also - Free postage - New and Used
Everything else remains • Unaffected kills green • Algae derbesia also - Free postage - New and Used
Caulerpa brachypus marine - caulerpa, - £4.95
Caulerpa brachypus macroalgae • Which great nitrate • Phosphate removal marine - Free postage - New and Used
Caulerpa brachypus macroalgae • Which great nitrate • Phosphate removal marine - Free postage - New and Used
Phytoplankton guillard - guillard, f2 - £25.99
Guillards phytoplankton culture • Farming add 2ml • Water before adding - Free postage - New and Used
Guillards phytoplankton culture • Farming add 2ml • Water before adding - Free postage - New and Used
Mengenal caulerpa racemosa - mengenal, - £14.01
Product mengenal caulerpa • Racemosa type live • Plant used aquariums - Free postage - New and Used
Product mengenal caulerpa • Racemosa type live • Plant used aquariums - Free postage - New and Used
Marine macro algae - £32.00
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Red sea no3 po4 - red, algae - £120.00
No3 po4 scientifically • Formulated algae reducer • Prevent growth nuisance - Free postage - New and Used
No3 po4 scientifically • Formulated algae reducer • Prevent growth nuisance - Free postage - New and Used
Marine macro algae halymenia - macro, algae, - £22.50
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Marine macro algae halymenia - marine, - £32.50
Even from reef • This particular genus • Can look vastly - Free postage - New and Used
Even from reef • This particular genus • Can look vastly - Free postage - New and Used
Swanson sea minerals red - swanson, - £16.99
Algae based mineral • Complex naturally contains • Calcium magnesium range - Free postage - New and Used
Algae based mineral • Complex naturally contains • Calcium magnesium range - Free postage - New and Used
Red sea no3 po4 marine - marine, algae - £11.99
- Free postage - New and Used
- Free postage - New and Used
Caulerpa prolifera marine - caulerpa, prolifera- - £10.80
They are from • Own refugium tank • Will include least - Free postage - New and Used
They are from • Own refugium tank • Will include least - Free postage - New and Used
Dragon breath halymenia - dragon's, - £20.00
Dragons breath attractive • Macro algae found • Reef flats moderate - Free postage - New and Used
Dragons breath attractive • Macro algae found • Reef flats moderate - Free postage - New and Used
Caulerpa prolifera marine - caulerpa, - £6.51
Caulerpa prolifera type • Marine macro algae • That commonly found - Free postage - New and Used
Caulerpa prolifera type • Marine macro algae • That commonly found - Free postage - New and Used
Blue life usa flux bryopsis - blue, - £22.99
- Free postage - New and Used
- Free postage - New and Used
Ocean nutrition marine algae - ocean, - £14.99
Available red brown • Green varieties option • Rich vitamin 100 - Free postage - New and Used
Available red brown • Green varieties option • Rich vitamin 100 - Free postage - New and Used
Macro algae mix caulerpa - ., - £6.52
Chaeto caulerpa mini • This product mix • Two types macro - Free postage - New and Used
Chaeto caulerpa mini • This product mix • Two types macro - Free postage - New and Used
Omega plant marine algae - 3,plant, - £11.89
Believed phlorotannins powerful • Antioxidants found brown • Algae could main - Free postage - New and Used
Believed phlorotannins powerful • Antioxidants found brown • Algae could main - Free postage - New and Used
Ziaja marine algae active - marine, - £11.95
Active firming cream • Ziaja marine algae • 50ml official sky - Free postage - New and Used
Active firming cream • Ziaja marine algae • 50ml official sky - Free postage - New and Used
Marine cheato chaeto - marine, - £25.14
Handful marine chaeto • Parasite pest free • Excellent nitrate phosphate - Free postage - New and Used
Handful marine chaeto • Parasite pest free • Excellent nitrate phosphate - Free postage - New and Used
Marine macro algae hypnea - algae,, - £52.70
This sale frag • Blue hypnea pannosa • See second photo - Free postage - New and Used
This sale frag • Blue hypnea pannosa • See second photo - Free postage - New and Used
Calcium magnesium capsules - calcium, - £22.99
Calcium from lithothamnion • Sourced fromlithothamnion marine • Algae 544 nrv - Free postage - New and Used
Calcium from lithothamnion • Sourced fromlithothamnion marine • Algae 544 nrv - Free postage - New and Used
Herons premium algae wafers - premium, - £17.80
Perfect food bottom • Feeding herbivores omnivores • Catfish well other - Free postage - New and Used
Perfect food bottom • Feeding herbivores omnivores • Catfish well other - Free postage - New and Used
Minerals for marine macro - £25.00
Have simplified dosing • Vial tube last • One month 300l - Free postage - New and Used
Have simplified dosing • Vial tube last • One month 300l - Free postage - New and Used
Vitalis marine algae large - marine, - £15.99
They are complete • Pet food fish • Formulated herbivorous marine - Free postage - New and Used
They are complete • Pet food fish • Formulated herbivorous marine - Free postage - New and Used
Halimeda cactus macro algae - halimeda, - £13.00
This living marine • Algae natural variations • Colour shape are - Free postage - New and Used
This living marine • Algae natural variations • Colour shape are - Free postage - New and Used
Marine hull cleaner - 1l, - £19.99
Product title marine • Hull cleaner 500ml • Boat algae rust - Free postage - New and Used
Product title marine • Hull cleaner 500ml • Boat algae rust - Free postage - New and Used
Omega plant marine - marine, algae - £11.89
Believed phlorotannins powerful • Antioxidants found brown • Algae could main - Free postage - New and Used
Believed phlorotannins powerful • Antioxidants found brown • Algae could main - Free postage - New and Used
Caulerpa macro algae for - macro, - £5.98
Caulerpa macro algae • Popular choice marine • Aquarium enthusiasts looking - Free postage - New and Used
Caulerpa macro algae • Popular choice marine • Aquarium enthusiasts looking - Free postage - New and Used
Aquascape epoxy 4oz - d-d, - £7.60
Coralline algae colour • Aquascape construction epoxy • Putty specifically use - Free postage - New and Used
Coralline algae colour • Aquascape construction epoxy • Putty specifically use - Free postage - New and Used
Marine macro algae - marine, algae, - £26.70
- Free postage - New and Used
- Free postage - New and Used
Herons premium bottom feeders - bottom, - £18.80
Perfect food bottom • Feeding herbivores omnivores • Including loaches cories - Free postage - New and Used
Perfect food bottom • Feeding herbivores omnivores • Including loaches cories - Free postage - New and Used
Red sea npx no3 reducer - sea, po-4 - £12.99
No3 po4 uses • Blend different carbon • Sources utilised specific - Free postage - New and Used
No3 po4 uses • Blend different carbon • Sources utilised specific - Free postage - New and Used
Caulerpa prolifera live - caulerpa, prolifera, - £19.99
Caulerpa prolifera runner • Five blades algae • Will turn looking - Free postage - New and Used
Caulerpa prolifera runner • Five blades algae • Will turn looking - Free postage - New and Used
Ziaja marine algae deep - marine, - £10.58
Revitalises lipo structure • Epidermis improves elasticity • Protects skin from - Free postage - New and Used
Revitalises lipo structure • Epidermis improves elasticity • Protects skin from - Free postage - New and Used
Boxes lacura marine - 2, - £15.99
- Free postage - New and Used
- Free postage - New and Used
Try this: marine aquarium setup | marine corals | marine fish tank setup | marine mushrooms | marine sump | marine tank setup | mini fish tank | nano fish tanks | ornamental fish | oxydator
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Everything you need to know about marine algae
Whether you are looking for a brand-new or second-hand marine algae, 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 £4.95, while premium listings can reach £120 — giving you a wide budget spread to work with. The average price of £19.59 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.