Two problems here. What is causing white mold on leaves? And the smaller leaves are curling in half, could this be over fertilizing?
I wouldn't say over fertilizing, looks to me like powdery mildew. What's the humidity? do you have good ventilation? Some neem should help.
I keep humidity at 40% and the temp is between 68-76 degrees. I have very good ventilation. I'm scratching my head on this one. The neem does get rid of it but I wish I could figure out what is causing it. Here's the wierd part, I have two different strains and only one is getting the powder mold.