Looking at some pictures of other people's tanks, it looks to me like BBA. I noticed this seems to be a fairly common, but I'm having a hard time trying to figure out how to get rid of it. My tank is 75 gallons, I'm currently running 2 marineland 360 canisters, and have 2-48" HO t5's. They tank is low tech and I have ADA Amazonia capped with gravel. any suggestions?