if you are doing hydro then don't take my guess of Mg deficiency at face value. I mostly only said that because that is a very common mistake for soil growers who think they are doing a good thing by using more expensive RO water when there is no reason to.

It could still be Mg, but I don;t know hydro at all, so you should probably get the opinion of a hydro grower... i'd sugest you fill out the troubleshooting form and post in the plant problems section.
syde00 Reviewed by syde00 on . about to take my first clones but I need your help! (pics) I just got home from school (all As go me:) I'm about to take my first clones and I need some help. Right now mom has some RO water with a bit of florakleen taking everything out of her so her babies start off fresh. Mom had about space between her and the light when I left but she seems to just want to grow nonstop! I really dig my new Sunblaze 4 bulb 4' T5 CFL and I'd recommend it to all, got a great price on ebay too. Ok questions: A couple of leaves have curled like the picture, Rating: 5