At the moment I just cannot get rid of my BGA, I remove as much as poss, and within 1 or 2 days it's EVERYWHERE again. Stats: CO2: Pressurized - 30PPM (drop checker) Filter: Eheim 2322 Lights: 2x24W suspended (10 hours) Dosing: EI - K2PO4, KNO3, Trace all from Aqua Essentials. Water change: Weekly - tap water conditioned with Hagen stuff. What should I do? What is wrong? I thought this was caused by low CO2/sunlight/low ferts? But I don't seem to have any of these problems as far as I am aware!