it's not very hot, i just moved it outside, it was under a 400watt MH, but since the lighting this time of year is perfect for finishing up flowering (this sativa is on her 8th week) this picture is old, and i've removed most of the large FAn leaves, but if there is a defency of some type, i want to fix it.
Either a potassium deficiency OR over fertilization. potassium can be locked out by salts. Flush soil with distilled or RO water. Check your pH levels also
I'm having the same problem. 1st week of veg. Temp never over 85 or 29degres. Leafs curling same, I haven't even used nutrients yet!!