OK, so I came home after being gone only six hours and this is what my plants looked like. I don't have a before picture, but they matched pretty well what I had seen as a healthy plant. Now they are all drooping over. There is no brown spots on them, but they felt dry. The temp has been a steady 77 Fahrenheit until it spiked late this afternoon, one of the fans got blocked. Also I had adjusted my PH last night to a good 5.5, as close as I could get. I checked again today and it was up to 7.0, but I already brought it back down. I just want to know what could be causing this drooping and dryness in the stems. Of the 4 plants total, 3 are effected, while the forth seems oblivious to the others' struggle. They all are getting oxygen from airstones, this is DWC by the way, and the lamp is MH, (400 w) and they are all about 7 days old. an hour after adjusting the ph and pouring a little water over the cubes that it doesnt look any better. I would appreciate some help in diagnosing my problem, I really dont want to see them die! THANKS. the leaves seem droopy, i swear, my camera is just really bad.