Algae ID help, and how to treat?

[windsor_salt]

 

[Dan_P]

The feathery fronds suggest bryopsis.

 

[encrustingacro]

Looks like Bryopsis. Fluconazole is usually how you treat it.

 

[DDenny]

Hard to tell but I agree with Dan_P could be bryopsis.would need a much closer look at the algea with white light or a sample in a white container to get proper ID.