Marimo moss balls

Marimo is a rare growth form of Aegagropila linnaei in which the algae grow into large green balls with a velvety appearance. The species can be found in a number of lakes and rivers in Japan and Northern Europe. Colonies of marimo balls are known to form in Japan and Iceland, but their population has been declining.    Light Keep your Marimo where they will receive low to medium indirect light. You must protect marimo from direct sun, as Marimo can easily turn brown if they are getting direct light! Also keep in mind that direct sun will be intensified by glass marimo enclosures which can heat water quite quickly. Remember - these guys are native to cool lakes, and should be kept cool.   Marimo are well adapted to low light spaces and can photosynthesize in normal household light. If your space has no window, keep marimo close to a fluorescent or full-spectrum bulb.   Changing the Water Change water once every two weeks using regular tap water (for best results, allow water to sit out