i noticed a lot of the growth towards at the tops are getting this weird chewed up looking leaves. anyone got any ideas of what could be going on? i looked briefly with a scope and didn't see any sign of mites but haven't completely ruled that out yet. one other thing is that they went through a lot of heat stress while i was getting my air conditioner fixed but that was over a week and a half ago. temp is 75 during day and 62-65 during night. 700 ppm. ph 5.5 in coco media.