some leaves thin, curled-upward, browning edges

[Baruce]

looks too hot

My thermometer records the high and low temperatures (which I reset daily), here they are for the last few days, before and after turning them to 12/12:

83.7 / 79.3
81.7 / 79.3
83.1 / 63.1
73.4 / 69.3

it's currently 79.7

Baruce Reviewed by Baruce on 12-28-2007. some leaves thin, curled-upward, browning edges Hello all, I'm a newbie, on my first grow. I just switched from 24-on to 12/12 yesterday (600w HPS) , and today when the lights came on I noticed that about half my plants have varying degrees of a leaf issue that I'm unsure about. Some of the leaves have begun to curl upwards along the edges, with accompanying browning and a thin appearance. There's also a bit of yellowing on all of the plants, which I was told was signs of growth and not to worry. But this is new, and I'm concerned and Rating: 5