Hello, you never mentioned your running temps for your grow. Heat can cause alot of problems and often times it shows in the leaves. Also, leaf curl can be caused by a nutrient lockout due to high PH. Check that out as well and get it down if needed. If its high a flush of the medium would help. Then come back with some nutrients to be sure shes fed. Overwatering has been mentioned and is a real common mistake but heat and ph can sneak in there and reak havoc. Good luck man. tc gm714
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