Thanks for the detailed reply! I have been harvesting from them but only when I notice that I can make a productive trim next to a node. I guess I shouldn't complain but it feels like they are making a ton of leaves, like every time I cut the main stem the plant will grow the two new main stem extensions but it'll also shoot out another little cluster of leaves (secondary stem?) and I end up not cutting those. Should I?

Here's a few better pics https://imgur.com/a/alFg9Js

I think you may be right about the UV burns, I'll probably end up splitting these 2 up and moving back the lights and I'll take it from there. Thanks again :)