They are about 15 inches away light recommended between 12 and 18 for a 3x3 flower footprint I have maybe 2 inches if I strap it right to the bars on top
Most are just the very tips I think either the light or I let them get a little dry one day the one with the bronze spots there's only 2 leaves on the plant like that
Slight burnt tips but only on the ones closest to light so I moved it up a little otherwise starting to smell like weed lol happy with them next ones I'm only going to do 2 probably though lol
Took some last night didn't want to go to crazy but seemed to open it up a bit ill definitely take some every once in a while if they look like they are shading budsites