There are 44 products.

Welcome to the beautiful world of marine macroalgae for the Display Tank & Refugium
Your 1st choice for Sustainable Grown Macroalgae Species in the UK since 2014

Find rare macroalgae species you might not have seen before, as they are often very hard to find and all the classic macroalgae species like Chaetomorpha and Caulerpa for best prices....

Welcome to the beautiful world of marine macroalgae for the Display Tank & Refugium
Your 1st choice for Sustainable Grown Macroalgae Species in the UK since 2014

Find rare macroalgae species you might not have seen before, as they are often very hard to find and all the classic macroalgae species like Chaetomorpha and Caulerpa for best prices.

We have collected over the last 14 years many different macroalgae species and really fell in love with the different beautiful marine species, which offer stunning colours and a amazing natural look, providing hiding spaces for fishes and critters or Copepods, and providing a natural healthy food source for herbivore fishes but besides of that... they will help to lower the Nitrate and Phosphate levels in the marine aquarium as with their growth they will remove those unwanted nutrients from the tank. creating a more clean water environment for happier fishes and soft / hard corals.

All the macroalgae we sell are from dedicated macroalgae tanks which are fish free and Copper free for disease-free and clean macroalgae. 
This said, they might come with hitchhikers not limited to Copepods and Rotifers, as those beneficial critters love the protected environment of our planted marine tanks.

If you are interested in some fact about macro algae...

Macroalgae are commonly just called Seaweed. Although a lot of macro algae species are edible we sell our macro algae just for the use in the marine aquarium, so please don't be tempted by the tasteful pictures, please.

Macroalgae species are divided into three main algae species groups which are the red, green and brown macroalgae.

The most common and widely available macroalgae species are the green macroalgae. Especially the different varieties of Chaetomorpha & Caulerpa are easily available, as they are successfully used to reduce effectively the Nitrate and Phosphate Level in the aquarium water, to suppress nuisance microalgae, as they often grow very fast and are easy to keep.

The second biggest group are the red macroalgae species, which often grow much slower than the green macroalgae species, but they add beautiful colours to the marine aquarium and especially to the Display Tank and in our opinion, some species are so great looking that they can easily compete with much harder to keep coral species.

The third largest macroalgae group are the brown macroalgae species, which are very rare to get, as they are not very often used, and more often seen as unwanted macroalgae in the marine aquarium.

In addition to a more natural look of the marine aquarium, they will add all the benefits of marine macroalgae, which you can rad more about in our Facts & FAQ part here

We hope you enjoy our beautiful marine macroalgae collection and feel free to contact us whenever you have a question

Receive updates about latest arrives and offers with our Newsletter plus a 5% Discount Voucher for new subscribers.

uc?export=download&id=0B0bSwyi_XLtXUjJ3U uc?export=download&id=0B0bSwyi_XLtXUE16V uc?export=download&id=0B0bSwyi_XLtXUGdyO

Showing 1 - 24 of 44 items
  • Gracilaria Tikvahiae - Mocha Ogo

    Gracilaria Tikvahiae - Mocha Ogo is a great algae for every marine aquarium, especially when it inhabits herbivore Fish & Seahorses. This macroalgae grows faster than most other Gracilaria species and offers not just a beautiful look and colour but also a great food source for Tang, Foxface and co., and holdfast for Seahorses. A great macro for the...

    £ 7.95
    0 1 2 3 4 0 Review(s) 
  • Cladophora Prolifera - Green Bush

    Cladophora Prolifera macroalgae is a fantastic addition for every display & Seahorse tank as it is a non-invasive & very compact growing algae, forming small irregular shaped clumps. It adds a beautiful bright green colour to the aquarium and provides hiding space for copepods and rotifers, allowing them to increase in population and in turn creating a...

    £ 6.95
    0 1 2 3 4 1 Review(s) 
  • Codium

    The beautiful Codium  isan true all-rounder macro algae for the marine aquarium. Not fuzzy regards the light or current, and beautiful looking. It has a great dark main structure, which develops irregular into cylindrical branches. Along its branches it develops soft fuzzy filaments which a lot of fishes love to eat. A perfect macro algae for Seahorses...

    £ 6.95
    0 1 2 3 4 16 Review(s) 
  • Gracilaria Curtissae

    The Gracilaria Curtissae macroalgae is beautiful red marine algae species. It features deep red branches which will form a symmetrical bush. Gracilaria species are slow growing and need a long time to attach themself.A great macroalgae for the Display Tank, where it will surely become fast a highlight and it might compete when it comes to the beauty of it...

    £ 7.95
    0 1 2 3 4 17 Review(s) 
  • Acanthophora Spicifera

    Acanthophora Spicifera is a gorgeous looking macro algae which belong to the red algae species although its colour ranges between brown/reddish/purple depending on what light is used. This species has irregular stiff uprights, which are quite fine and it can attach itself to rocks, shells, etc. A great algae choice for the tank display and Seahorse...

    £ 7.95
    0 1 2 3 4 11 Review(s) 
  • Neomeris Annulata

    Neomeris Annulata is a very rare macro algae in the marine tank, as it grows very slow. It is not very palatable either, as it is slightly calcified. It grows normally in shallow water in smaller clusters or just solitary and has green, beautiful finger-like uprights. We recommend this macro algae more for dedicated macro algae tanks or smaller tank...

    £ 7.95
    0 1 2 3 4 0 Review(s) 
  • Halymenia Maculata

    Halymenia Maculata or often referred to as Leafy Sphere Ogo is a very popular macroalgae for the marine aquarium as it is a beautiful marine algae for the Tank Display and for feeding herbivore fishes. The beautiful more stiff like blades vary in a colouration between purple over light red to deep red ( most often ) depending on what light is provided.

    £ 7.95
    0 1 2 3 4 0 Review(s) 
  • Cryptonemia Crenulata

    Cryptonemia Crenulata is a very rare to find macroalgae, which is a shame as it is with its thick branches and its deep red colour a real eye catcher in the display tank. This macroalgae is non-invasive and grows quite slow, which makes it a great addition for Nano-Tanks, Seahorse Tanks and planted reef tanks.

    £ 7.95
    0 1 2 3 4 12 Review(s) 
  • Ulva Lactuca

    Ulva Lactuca or often called Sea Lettuce is a medium fast growing and very palatable macroalgae, therefore it is a great natural food source for herbivore fishes like Tang & Foxface. With its vibrant green colours it will be a beautiful highlight in the display tank. This algae will grow towards the light, with beautiful different green shades and...

    £ 6.95
    0 1 2 3 4 6 Review(s) 
  • Caulerpa Taxifolia

    Caulerpa Taxifolia belongs to the  greenmacro algae species and has long fronds with segmented appendages. It is tolerant to a wide range of water temperature but needs more light than for example Caulerpa Prolifera. A very nice looking algae which gives the marine tank a more natural look. It is as well a recommended algae for the refugium to reduce...

    £ 6.95
    0 1 2 3 4 14 Review(s) 
  • Bryothamnion Triquetrum

    Bryothamnion Triquetrum is a rare to find slow growing macro algae which is non-invasive and grows in up to 15-20 cm long stiff branches with short stalks. It is a great choice for the display Tank and Seahorse Tank. The colouration of this macro algae species will vary depending on the light providing between a bright and dark red.

    £ 9.95
    0 1 2 3 4 0 Review(s) 
  • Caulerpa Serrulata

    The Caulerpa Serrulata macro algae species has small branched uprights with a series of flat serrated blades. It of often used for nutrient export in the refugium, but will give as well additional holdfast for seahorses.

    £ 5.95
    0 1 2 3 4 6 Review(s) 
  • 4 Macro Algae Starter-Pack

    This macro algae pack is a great choice for you when you just started to enrich your marine tank with macro algae and you don't want to save some money to start with. You will get 4 different marine algae starter frags out of our macro algae selection, which we will choose for you.

    £ 14.95
    0 1 2 3 4 21 Review(s) 
  • Red Turf Marine Macroalgae Red Turf Marine Macroalgae
    Product available with different options
    Red Turf Macroalgae

    We couldn't identify the beautiful looking macroalgae species yet, but this algae species adds a vibrant red colour to the reef tank and provides as well a great food source for herbivore fishes, like Tang and Foxface species, which like to snack on this macroalgae. This beautiful red macroalgae species will attach itself and has a more delicate structure. 

    £ 8.95
    0 1 2 3 4 11 Review(s) 
  • Fast Growing Nitrate & Phosphate Remover Algae-Pack

    This macro algae pack is a great choice if you are looking for fast growing marine macro algae to reduce the Nitrate and Phosphate levels in your marine aquarium.  They are smaller algae frags than the single sold algae species but a great choice if you don't want to spend a lot of money. You will get 4 different marine macro algae as starter algae frags....

    £ 12.95
    0 1 2 3 4 28 Review(s) 
  • Ochtodes Sp.

    The marine macroalgae Blue Ochtodes sp. with its purple/blue colour is a fantastic addition to the marine tank. It will add a beautiful and rare to find colour to the tank and will quickly become a centerpiece. It has a dense structure which offers great hiding space for beneficial hitchhikers like copepods, rotifers, starfishes and other hitchhikers....

    £ 7.95
    0 1 2 3 4 29 Review(s) 
  • Gracilaria Vermiculophylla

    The Gracilaria Vermiculophylla is a beautiful algae species which we are able to offer you new from the Gracileria family.  It is a striking red algae species, which is a perfect addition to any reef tank display and the Seahorse tank as it is a non-invasive algae which offers additional natural holdfasts. It features long red branches which will become...

    £ 9.95
    0 1 2 3 4 8 Review(s) 
  • Caulerpa Racemosa Cylindracea

    Caulerpa Racemosa Cylindracea is a very fast growing and beautiful looking marine macroalgae, which will give your tank a more natural look and adds a natural holdfast for Seahorses. This caulerpa algae is a great choice for the nutrients export, e.g. to reduce the Nitrate and Phosphate level in the tank, as it is quite a fast growing macroalgae species....

    £ 6.95
    0 1 2 3 4 9 Review(s) 
  • Caulerpa Brachypus

    This Caulerpa marine macroalgae species is a much smaller but faster growing macroalgae than Caulerpa Prolifera, with blades between 2-10cm long. The fronds are attached to a slim rhizome which will attach itself to rock, gravel etc. It is a good marine algae for nutrients export especially for the sump but handle with care in the Reef Display Tank, as it...

    £ 6.95
    0 1 2 3 4 5 Review(s) 
  • Caulerpa Prolifera

    Caulerpa Prolifera is a beautiful macroalgae species, offering long blades which can grow up to 20-30 cm long.The fronds are attached to a thick rhizome which will attach itself to rock which means it will need to be restricted in the tank. Caulerpa Prolifera will add a great natural look to the marine tank. This algae can adapt better to various water...

    £ 6.95
    0 1 2 3 4 11 Review(s) 
  • Chaetomorpha Chaeto Fine

    This Chaeto species is a perfect and safe macro algae to reduce the Nitrate and Phosphate levels in the marine tank water. It is best placed in the sump/refugium with a sufficient red/blue or full-spectrum light. Chaeto will grow very fast and the best with this algae is that herbivore fishes like to eat it, opposite to the more stringy Chaetomorpha...

    £ 8.95
    0 1 2 3 4 19 Review(s) 
  • The Seahorse Trust - Donation

    Thanks to some of our kind customers we came in contact with The Seahorse Trust.  We believe that a little help and a little consideration can make big changes and we got the impression that the UK registered charity The Seahorse Trust is very passionate about the work they are doing.

    £ 1.00
    0 1 2 3 4 0 Review(s) 
  • Caulerpa Racemosa Grape Caulerpa marine macroalgae
    Product available with different options
    Caulerpa Racemosa Grape Caulerpa

    Caulerpa Racemosa Grape Caulerpa marine macroalgae is a very popular and beautiful looking macro algae species, which often get seen as the origin of Caulerpa racemosa species. It is fast growing and forms ball shaped appendages, therefore it is commonly called Grape Caulerpa. In the planted reef tank we recommend to keep it away from the main rockwork as...

    £ 6.95
    0 1 2 3 4 5 Review(s) 
  • Caulerpa Racemosa Peltata

    The marine macroalgae species Caulerpa Racemosa Peltata features quite small round or flat topped uprights, which look like little umbrellas. It is a fast growing marine algae addition which is a great addition for the planted reef tank or refugium. As it will attach itself it is recommended to keep it away from the main rockwork.

    £ 6.95
    0 1 2 3 4 3 Review(s) 

Frequently Asked Questions

What macroalgae do you recommend for the Display Tank?

There are a lot of beautiful macroalgae species which are just perfect to be placed in the Refugium Display Tank & even for a Seahorse Tank.

We can especially recommend non-invasive macroalgae species which will add a beautiful colour and structure to the marine aquarium to enjoy.

Macroalgae for the Display Tank

How to achieve better macroalgae growth?

Macroalgae don't need a lot to grow, just good lighting and enough nutrients.

Should you already have good lighting for your macroalgae but the growth is not as it should be, maybe there are some nutrients missing in your aquarium water which it need to grow?

Find more here about what water conditions are optimal for macroalgae and dosing nutrients to your reef tank/refugium.


Clean Macroalgae - Sustainable grown in the UK

Livealgae UK offers you premium macroalgae species from fish & copper free tanks. 

All macroalgae we sell are sustainable grown in the UK and will be dipped and manually inspected before getting posted out to you, to ensure a premium clean macroalgae quality as much as possible.

Satisfaction Guarantee

We want you to be fully happy with your new additions and offer you a hassle free 100% Satisfaction & Alive Arrival Guarantee. 

If you are not fully happy with your purchase on arrival we will refund your money back (UK Orders only).

Read more about here:

GuaranteED Satisfaction

Review(s) and rating(s)

0 1 2 3 4 (4,9/5)

Category : Macroalgae - Based on 325 rating(s) and 325 review(s)

View All Reviews