Hello, I am having a problem with my plants drooping about 3 hours or so before lights off. They look great from the time the lights come on to about 3 4 hours until they are about to go off. I am using current culture setup with floraflex nutrients. I am running sterile so nothing extra. Room temp is about 77 degrees and 50rh. I have tried bumping up the nutrients because the plants look as if they are exhausted but that did not solve the problem. I am currently at 1.0 EC 6.0ph using RO water. Anyone have any advise that can point me in the right direction.