Definitely not bba. Its diatoms , and it will go away , in time , on its own. You need to turn your co2 on 2 hours before your lights come on and off 30 miuetes before they go off. Lights on for 8 hours per day. You can have a break in mid day if you want for an hour or two. That may help prevent algae. Bear with the diatoms , they will go away.
Last edited by rick dale; 08-31-2014 at 10:29 PM.