I'm having a lot of the brown algae. I've cut back the photo period and have been using a bit of H2O2 as well. I'm doing weekly 10% water changes and I dose vinager. I also run GFO. The tank did look clear today. Oh, and I increased my clean up crew a bit. I think I feed too much. I checked the Nitrates and the seem to 0 and phosphates are not registering on my test kit. API kits.