Adding duck weeds to cut off some light. I use to have some duck weeds, but it block my surface skimmer all the time, so I removed them. I am planning to block some light from my LED light, instead of increase the CO2 injection.
I have some Amano shrimps inside the tank, but they don't eat BBA, I think. If it is black hair algae, they will eat them. The black stuff on the Phoenix Moss is the dead cell of Blue-Green-Algae. I did a 6-day Erythromycin treatment to kill them off last week. Then I have this Black Hair algae or BBA outbreak.