Reef nutrition


When I got my ball of Chaeto is was green. I've had a proper light on it for about 12 hours nightly opposite my tank lighting, but some of it is dark brown. What's happening?


Staff member
Pic is worth a thousand words :)

If it’s growing well the part on top will die and turn brown or white as it gets pushed up sometimes, time to harvest.

Or maybe another algae growing on it?
its dying if its brown. Harvest that out and keep the fresh green.

what kind of light are you using for the chaeto? Too much light will fry it


Chaeto can also have trouble in tanks if there is too little iron. I had high nitrate and phosphate for a while and the chaeto was struggling until I started dosing iron. Now it grows like crazy.