Has a small burn

Looking very nice, keep up the good work.
What strain?
Fair enough, do you know if it is photo-period or auto-flowering? If not I would assume photo-period until there is evidence to the contrary. If it starts flowering on 18 hours of daylight it is an auto.
They look good. I wouldn’t worry too much about that little bit of burn. The soil might just be a little too hot for her.