Yo. Why are you posting up an entire THREAD from ICMag?
You need to answer the troubleshooting questions and post pics. Posting content from other sites isn't going to help with your specific plants; there are as many grow styles and setups as there are growers...
stinkyattic Reviewed by stinkyattic on . TOP LEAVES ARENT GROWING My plants are about 9 weeks old and have been 12 hours for one week, some of the plants top leaf families, are growing very weak. shriveled/curled over looking... on the same plant their are big healthier leaves from early growth, but all the new top leaf growth on all the plant tops, where all the buds will soon be are growing are all droopy, weak, very rounded over, curled down, just not growing properly at all... something is wrong with them, what.... the room is cold at night ? Rating: 5