There is a trouble-shooting form "sticky" in this section, more information would probably help some of the more knowledgeable folks in diagnosing this. :thumbsup:

I agree with the doctor, some of that damage looks like it's been wind-blown.

Have they been in those pots for very long? What's the medium? Is pH stable? :detective1:
EvilCartman Reviewed by EvilCartman on . 22 Days Flowering - What the HELL is going on with my fan leaves? %$&?* Highest Temp (lights on) 88Deg. F Lowest Temp (lights off) 74Deg. F Highest humidity 60% Lowest humidity 33% Fans always on when lights on Fans come on for 15 mins every hour when lights off Leaves affected are mainly lower to mid fan leaves. Areas of damage have a dry crispy feel as well as the green on the same leaf. Papery feel. Not all leaves feel this way, just the ones with areas of damage. Rating: 5