Plants are 6 weeks, in Bubbleponics, given premeasured nutes (Stealth), PPM 900-1100. I've had them under florescent light until this week. Still 18/6, I now have them in a large walk-in closet, ventilated, fan blowing, 650 W HPS. Temps were over 100 outside, so have used A/C, but grow room temp...