Yes I know, this is a dead horse of a topic, but I'll beat a little anyway. Added pressurized CO2 about a month ago to a 92G, 192W CF, moderately planted (getting heavier) and slightly lowered EI dosing. It took about 2 1/2 wks to get my levels at 30 ppm-ish (drop checker) during which time CO2 was gradually increased. 2 days ago I noticed a few tufts of BBA, which I'm assuming are from the increase/fluctuation of the weeks before...correct? or no? Co2 does come on 1hr before lights and off 1hr before lights off. That shouldn't cause fluctuation issues, should it?