Ok So yesterdsay I upgraded from 2 open hood 150 hps. To a 400w hps in a sunsystem yeild master. I have a small pc fan blowing on the light at the moment because I dont have a bigger blower yet. I changed the water in my 3 dwc buckets with 2 and a half tbs of foxfarms tiger. They are a week into flowering. And I copme home early from work today and they are in extreme wilt. I think I might have lost them. It got pretty cold her lastnight and I think They may have gotten too cold. the lights have been on for 2 hours. Um Any other ideas for why they would wilt other then the cold night? The grow box is about 75-78ish with the new 400w. =[. Someone please help. It doesnt look like nute burn or anything just realy bad wilt.