Hi there, I have had my tank set up for about 3 weeks now, and brown algae has now started growing, although there is a fuzzy brown (hair algae?) on my cambomba. I have pressurised CO2 (not sure on the bpm, but the permanent CO2 test is green). I have about 2.5wpg and I'm using eco complete as the substrate and normal playsand (2 islands of eco, with a sand 'path' between them). Tomorrow is water change day, so will clean it all off, but should I worry about this, or just put it down to things not being completely stable yet?