Algae I.D.

[pmcustom]

This might be a no-brainer, but what is this?

 

[ScubaRaven]

Could be Derbesia. A problematic algae. It's always hard to tell from pics. Is it growing throughout the tank?

 

[pmcustom]

on this rock and one other...it doesn't seem to be spreading, but it is growing pretty fast.

 

[ScubaRaven]

If you can pluck it out, do so but try to remove it as close to the base as possible. It is common in newly setup systems and normally crashes on its own as higher algaes become more dominant. Also, you might want to consider added some macro algae of some form to help reduce nutrients which otherwise contribute to problematic algal growth.

Rich Valentine

 

[pmcustom]

I did recently put some caulerpa in my refugium, so maybe it'll take a little while. i haven't started harvesting yet. thanks