You should check for nutrient deficiencies. There's a sticky thread here on that. I got a SLH which I transplanted when flowering began and in a few days lost half the leaves overnight, no yellowing or curling, so my pb is a tad different.
http://imgur.com/a/sY8DM
You can see the lower part of the stalk is bald. They all fell overnight. This is a Super Lemon Haze tree top grow, about 2 weeks into flowering.
At the same time flowering started she was transplanted from a regular pot in the garden to this sky high 30L pot. She was...
I watched your tree top grow video, very impressive. Very interested in what type of tree that was; I've been searching for an oak as its leaves don't fall until winter, just turn black, but it's hard on the skin & hard to climb. By looks I'd say the tree in the video is an elm, right? Have...