FYI,
My [friends] 180 was having a large outbreak of Valonia/Bubble algae, sometimes called Sailor's Eye.
I suggested she choose a Naso Tang. They are better than Mythrax (Emerald) Crabs for eating Valonia.
In two weeks, the algae is almost gone
Very soon we are going to need some high veggie mix food, if anyone is making some, I'll buy a couple pounds from you.