why are my fan leafs wrikled

the leafs on my Afghan kush and silverback
are wrinkled is this from too much water

How old are the plants? What's your temp?

i have AF's that the bottom sucker leaves are yellow and crumbly i got my ph level right and im running 400 watt hps temp flux's from 70 to 89 degrees F i had problems with the leaves curling also

too high of heat shouldn't go over 80 really 85 is maxed out