I checked on my babies this morning and the leaves are curling. I did a search and came up with the light is too close and the plant is getting cooked. It's curling its leaves to sweat off some water to cool itself. This may be because I went back to the metal halide after trying some LEDs and put the halide back a little close. I went back to the halide from the led because I was afraid my grow area wasn't staying warm enough with the LEDs . So I raised the halide up about four inches and misted the plants with some Ro/di with a drop of cal/mag..