NLAF First grow

I'm concerned about humidity and root zone temperature at the moment. The plant leaves appear to be drying out even though it's literally sitting in water. I've added some ice cubes to the res for now.. and will be doing so in the hotter parts of the days ahead. I'll also be cutting a mat to go over the plant inside the grow box to shield it from the led, even though it's not as powerful as a huge hid light.. I want to see if it helps. As far as humidity I've taken a water bottle and am misting the grow area every once in a while, as well as adding a cup with some water in it to the small grow area, as well as slowed my air intake and exhaust fans down. I'll post more pictures as I see changes. So I had been concerned that the humidity was too low in the little box I have these in and I'd decided to just spray them a few times with water, I also had changed the water. I didn't think I got the nute's to hot but.. the plant did not like it at all.. (i'm still not sure if this is the nute's or spraying the plant that caused this.) After changing to just tap water ph'd down to 5.55 ph it appears to have helped. The growth on this plant has all but stopped.. I think I hurt it pretty bad, anyways. There was a 2nd water change this week with 1.5 gal water ph'd to 5.5... I'm making twice daily adjustments to try and keep the water as close to 6ph as I can. ok so it appears I read the great white feed chart wrong and tried to kill the plant I was putting in enough great white for 10 gal. not 1......