Marine algae
Marine algae for sale on Ireland's largest auction and classifieds sites
Red ogo marine macro algae - marine, - £20.43
Red ogo gracilaria • Parvispora attractive hawaiian • Endemic macro algae - Free postage - New and Used
Red ogo gracilaria • Parvispora attractive hawaiian • Endemic macro algae - Free postage - New and Used
Caulerpa prolifera marine - -, - £12.93
Caulerpa prolifera type • Marine macro algae • Commonly found coral - Free postage - New and Used
Caulerpa prolifera type • Marine macro algae • Commonly found coral - 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
Opatra revitalising marine - opatra, - £187.90
Brand new sealed • Opatra revitalising marine • Product rejuvenate skin - Free postage - New and Used
Brand new sealed • Opatra revitalising marine • Product rejuvenate skin - Free postage - New and Used
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Marine macro algae - ,, halimeda - £16.15
Marine macro algae • Display refugium this • Mature rooting plant - Free postage - New and Used
Marine macro algae • Display refugium this • Mature rooting plant - Free postage - New and Used
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48 listings · from £4.3 · avg £32.25
⚠️ These listings were last updated more than 90 days ago.
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Browse 48 marine algae listings currently in our index. Prices range from £4.3 to £503.99, with an average of £32.25. 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 halymenia - algae,, - £22.50
Cutting from colony • Shown photographs would • Like appologise our - Free postage - New and Used
Cutting from colony • Shown photographs would • Like appologise our - Free postage - New and Used
Hypnea pannosa - (blue, hypnea) - £14.01
Hypnea pannosa blue • Macro algae rare • Purple colours grows - Free postage - New and Used
Hypnea pannosa blue • Macro algae rare • Purple colours grows - Free postage - New and Used
Marine macro algae - £17.25
Would like appologise • Our price increases • November 2025 all - Free postage - New and Used
Would like appologise • Our price increases • November 2025 all - Free postage - New and Used
Red ogo gracilaria algae - red, - £10.80
Red ogo gracilaria • Hardy fast growing • Macro algae that - Free postage - New and Used
Red ogo gracilaria • Hardy fast growing • Macro algae that - Free postage - New and Used
Marine macro algae halymenia - macro, algae, - £22.50
Would like appologise • Our price increases • November 2025 all - Free postage - New and Used
Would like appologise • Our price increases • November 2025 all - Free postage - New and Used
Calcium plant based red - calcium, - £18.99
Essential mineral calcium • Needed various bodily • Functions live cultures - Free postage - New and Used
Essential mineral calcium • Needed various bodily • Functions live cultures - Free postage - New and Used
Marine macro algae - ,, caulerpa - £15.50
This sale healed • Growing holdfast runner • Cutting taken from - Free postage - New and Used
This sale healed • Growing holdfast runner • Cutting taken from - Free postage - New and Used
Red grape caulerpa algae - red, - £15.08
- 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
Marine macro algae - £32.00
Rhodopeltis spp would • Like appologise our • Price increases november - Free postage - New and Used
Rhodopeltis spp would • Like appologise our • Price increases november - Free postage - New and Used
Herons premium spirulina - premium, - £14.90
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
Herons premium algae wafers - premium, - £18.80
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
Marine macro algae - ,, halymenia - £32.00
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
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
Eco marine algae - eco, - £503.99
Eco marine algae • Extract premium oil • Soluble active ingredient - Free postage - New and Used
Eco marine algae • Extract premium oil • Soluble active ingredient - Free postage - New and Used
Ocean nutrition formula two - formula, - £21.45
Ocean nutrition formula • Two flakes are • Highly palatable diet - Free postage - New and Used
Ocean nutrition formula • Two flakes are • Highly palatable diet - 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
Thalgo marine algae solid - marine, - £16.25
Refreshing step this • Marine soap concentrates • Algae which cleanses - Free postage - New and Used
Refreshing step this • Marine soap concentrates • Algae which cleanses - Free postage - New and Used
Ocean nutrition marine algae - marine, - £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
Herons algae wafer mix - herons, - £18.50
Perfect food bottom • Feeding herbivores omnivores • Including pleco loach - Free postage - New and Used
Perfect food bottom • Feeding herbivores omnivores • Including pleco loach - Free postage - New and Used
Vibrant liquid reef safe - vibrant, - £49.95
Vibrant new revolutionary • Liquid aquarium cleaner • You can say - Free postage - New and Used
Vibrant new revolutionary • Liquid aquarium cleaner • You can say - Free postage - New and Used
Brightwell aquatics chaetogro - aquatics, - £24.99
Nutrients are substances • Required algae survival • Collectively involved all - Free postage - New and Used
Nutrients are substances • Required algae survival • Collectively involved all - Free postage - New and Used
Cheato algae cheatomorpha - cheato, - £9.99
Cheato algae cheatomorpha • Marine aquarium refugium • Nutrient removal - Free postage - New and Used
Cheato algae cheatomorpha • Marine aquarium refugium • Nutrient removal - Free postage - New and Used
Omega plant marine algae - omega, - £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
Blue life usa red - life, - £19.95
Algae growth your • Aquarium will cause • Decrease using red - Free postage - New and Used
Algae growth your • Aquarium will cause • Decrease using red - Free postage - New and Used
100 spirulina powder algae - 100%, - £4.30
Vegetable fish food • Including popular malawi • Cichlids mbuna group - Free postage - New and Used
Vegetable fish food • Including popular malawi • Cichlids mbuna group - Free postage - New and Used
Ziaja marine algae active - marine, - £11.25
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
Herons spirulina algae wafer - herons, - £18.50
Perfect food bottom • Feeding herbivores omnivores • Including pleco loach - Free postage - New and Used
Perfect food bottom • Feeding herbivores omnivores • Including pleco loach - Free postage - New and Used
Api prevent algae 118ml marine - api, - £7.45
Keep your aquarium • Looking its best • Api pre bent - Free postage - New and Used
Keep your aquarium • Looking its best • Api pre bent - 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
Aquarium food seaweed julian - aquarium, - £9.50
Two little fishies • Seaveggies seaweed green • Porphyra yezoensis red - Free postage - New and Used
Two little fishies • Seaveggies seaweed green • Porphyra yezoensis red - Free postage - New and Used
Aquascape epoxy 4oz - d-d, - £6.60
Aquascape has been • Developed stickier than • Most epoxies that - Free postage - New and Used
Aquascape has been • Developed stickier than • Most epoxies that - Free postage - New and Used
Fauna marin dino - marin, x - £29.99
Fauna marin dino • Very strong effective • Solution which removes - Free postage - New and Used
Fauna marin dino • Very strong effective • Solution which removes - Free postage - New and Used
Ziaja marine algae - marine, deep - £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
Collagen tablets colvita - , - £49.48
Supports fight against • Many diseases including • Rebuilding collagen most - Free postage - New and Used
Supports fight against • Many diseases including • Rebuilding collagen most - Free postage - New and Used
Sinking marine 5mm - marine, spirulina - £17.99
Vibrant colour health • Boost sinking spirulina • Algae pellets why - Free postage - New and Used
Vibrant colour health • Boost sinking spirulina • Algae pellets why - Free postage - New and Used
Api prevent algae marine fish - algae, - £7.45
Api prevent algae • From building your • Aquarium 237ml solution - Free postage - New and Used
Api prevent algae • From building your • Aquarium 237ml solution - 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
Gatineau marine algae - gatineau, - £29.94
Skin that looks • Beautifully smooth supple • Over face neck - Free postage - New and Used
Skin that looks • Beautifully smooth supple • Over face neck - Free postage - New and Used
Labs algae flakes with - labs, - £12.45
Addition garlic provides • Enhanced health benefits • Acting feeding stimulant - Free postage - New and Used
Addition garlic provides • Enhanced health benefits • Acting feeding stimulant - Free postage - New and Used
Ocean nutrition marine - nutrition, - £31.95
Seaweed selects nutritions • Marine algae natural • Garlic extract increased - Free postage - New and Used
Seaweed selects nutritions • Marine algae natural • Garlic extract increased - Free postage - New and Used
Seachem phosguard phosphate - seachem, - £8.25
Seachem phosguard • Rapidly removes phosphate • Silicate from marine - Free postage - New and Used
Seachem phosguard • Rapidly removes phosphate • Silicate from marine - Free postage - New and Used
Reef geeks marine - geeks, - £15.99
Reef geeks phytoplankton • Live food which • Provides anutrient rich - Free postage - New and Used
Reef geeks phytoplankton • Live food which • Provides anutrient rich - 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 £4.3, while premium listings can reach £503.99 — giving you a wide budget spread to work with. The average price of £32.25 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.