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.

Whether you're interested in staple refugium macroalgae like Gracilaria, Caulerpa, Ogo, and Chaeomorpha, or stunning macroalgae like Hypnea or Botryocladia for the display, MosaicMacros has you covered!