Dark looking foliage at new growth is what says to me too much nitrogen.. BAD GROWER. Must be something I added nutrient wise lol... Hardy har har. I totally cheated and added another light.. I want this plant to keep with the others and I felt bad putting it under just "one" light so I added another light lol.. Destroyed my tests results lol. I never really planned on growing with a 70w 12v Cob.. I just wanted to see what it looked like lol. It's interesting.