Dang ENT, you're good!! I checked on things last night and PPM's were RISING. First time i've encountered this, and I believe its from having Co2 and then not having Co2. Last night the propane was empty and co2 burner was off, and I think they started neglecting the extra high PPM's. In the process of backing off now. Spot on dude.. What gave it away?? The little bit of leaf curl?
I would say the tallest colas are about 12-15 inches from the glass in some parts. I run the hoods pretty low, quite a bit lower then in those pictures.
I'm curious too.
I always thought the upward leaf curl on the edges was a sign of heat/ low humidity stress.