I've seen BBA in indoor KOI ponds with no direct light and no plants. Would raising the co2 help? Point I'm making is BBA can strike anywhere even in very low light situations. If the tank is really dirty you see this quite often. How many times do you go into LFS and see BBA in some very poorly light setups? Keeping the tank clean of organic waste allows much moer flexibility with everything.
Last edited by houseofcards; 11-14-2012 at 02:30 PM.