They look good man. I have a few suggestions. first, the stems are a little purple, this from either cold temps or more likely a nitrogen toxicity or deficiency. if you've been giving lots of nutes try to cut back. If you haven't given much, then give em some more. also, the leaves near the bottom look like they're standing up and curling. it looks like they're trying to expel water but cannot. get more/better ventilation and that should go away. Good luck man, keep up the good work.