nute burn or light burn? please look at my pic and tell me

ok i went to check on my lil one this atfer noon and she had this brown spot on her can you please tell me what this is?

Your not going to get light burn from flouros, so something they ate id guess, but its kinda hard to determine. Are these clones? Are those screws for handles you made?

Odd yeah.
To me the spotting looks like nutes, but the big cruncy part looks like a light burn to me.

I say lights because it looks like its happen to only 2 leaves mainly? both next to eachother. One at the base on the right side the other the whole leaf except the base. Unless I am seeing the picture wrong it looks like it had a nice hot spot right where those 2 leaves are. Someone else may be able to shed more light, or maybe you can post a few more pics more up close?

they ar edry and crunchy and i havent given them anything but tap water so im hoping its a small burn