my leaves are crispy like u tpuch them and they crumble i have a 4x4 tent with 4 plants in 5 gallon soil buckets with a 400 mh bulb but only a leaf here and there are burn to the touch but mainly in the middle of the plant on the fairly larger leaves they are about 5 weeks old about 11 inches tall with light about 12 inches from the top they look great except for a toasted leaf here and there.