Wtf???

Whats up with the really bleached out spots? It's only on one or two leaves, on 2 different plants. No foliar feeding, not nute burn (to my knowledge) No bugs, not heat, I cant figure it.
Surely someone has seen this before. I don't think it's serious, but I could be wrong.

That's really strange! Never have seen that before. Not sure what could be causing that other than stress? or genetics possibly. Besides that your grow is healthy and progressing right? If so I wouldn't worry about it as the rest looks healthy. Could be just a fluke.

It's bizarre alright. It looks like I dropped bleach or acid on it. It's on 1 out of 18, so if it doesn't spread, I'm good with it. It's probably a genetic thing,

have pride in those bleach stripes

make sure you dont splash the leaves when you water them.