The type of algae you have are favorites of Otos, SAEs and the American Flagfish. I would suggest lifting the lights a little bit if you can as this type of algae can bloom with strong lights. I've had the same algae in my breeder box while the main tank was clean. The proximity of the LED light was giving me high light since the breeder box was only 6 inches deep and it almost completely took over the breeder box. I introduced 1 american flagfish and 1 SAE and they cleaned up the box in a couple of days.