2K INSTAGRAM FOLLOWERS SALES EVENT !

Take 25% off ALL MACROALGAE in the shop!

PLUS take FREE ALGAE on qualifying orders!

Orders $25+ - FREE Scrap Bag!

Orders $50+ - FREE Red Algae 4-Pack! (grower’s choice)

Orders $100+ - FREE Rare Indo-Pacific Algae 3-Pack! (grower’s choice)


**Offer is in accordance with order total BEFORE shipping price!***


Offer automatically applied at checkout.

Offer ends 07/03/24.

Shop All

Bored of the average reef aquarium?

MosaicMacros offers a wide range of exotic marine macroalgae for sale! Create a beautiful planted mosaic of seaweed in your aquarium with our macroalgae hailing from both the Atlantic and Indo-Pacific regions. We have the largest selection of macroalgae around!

Macroalgae provides a naturalistic scape for fish and a safe haven for small organisms - boosting your tanks biodiversity all while adding hiding places for fish and removing toxic compounds from aquarium water.

New Species!

Best Sellers

Check Out Our Invertebrates!

Invertebrates compliment macroalgae exceptionally well. Here are some of our favorite inhabitants for macroalgae aquaria (and they're safe for nano tanks, too!)

Shop by Phylum

Rhodophyta (Red Algae)

Rhodophyta, commonly known as red algae, make beautiful additions to any aquarium.... 

Rhodophyta (Red Algae)

Chlorophyta (Green Algae)

Green algae often grow prolifically, adding a very naturalistic vegetative look to... 

Chlorophyta (Green Algae)

Phaeophyta (Brown Algae)

Brown algae are seldom seen in the hobby due to most being... 

Phaeophyta (Brown Algae)

Got Hair Algae?

Give our Dove Snails (Strombus maculatus) a try! Not only are they great hair algae eaters, they'll even clean your larger macroalgae.

MosaicMacros

Dove Snail | Columbellid euplica

$19.99 USD
$19.99 USD
Sale Sold out
Number of Snails
View full details

Shop By Genus: Caulerpa

Restriction on Shipping: Caulerpa species are BANNED in the state of California. We are absolutely unable to send any member of the genus into the state, and any order placed within California with any member of the genus will be cancelled and refunded.

View all

Shop By Genus: Gracilaria

View all

More Categories

  • Rhodophyta

    Rhodophyta are commonly referred to as red algae. These species take on reds, purples, blues, and some are even iridescent in nature.

  • Chlorophyta

    Chlorophyta, or green algae, are some of the most prolifically growing algae species. Members of the Codium and Caulerpa genus are within this category.

  • Phaeophyta

    Phaeophyta are usually cold water in nature, though some tropical species are kept in aquariums. Sargassum and Padina are the two main genus that find their way into home aquaria.

Questions, Comments, Concerns?

Contact us!

Customer service is our top priority here at MosaicMacros (outside of quality algae, of course.) If you have any questions regarding algae, issues with an order, or just want to discuss seaweeds, shoot us a message! We're always here to help :)

Contact Us