This looks like water spots…lensing burns from the light. Was this the only leaf
Thanks I was what I was thinking . That or water spots or heat stress. I’m using general hydroponics . The three bottles grow micro n bloom. Going by directions only using a little less due to it being autoflower where I read they are sensitive to nutrients .
That’s what I am leaning towards now. It is only the one leaf. I’m using a drip system on top that kind of spits the water out. Maybe some water git in the leaf and I possibly had the light to low. I’ve since raised it and the slots have no spread . Oh and yes it was only the one leaf .
Yeah could be either or. Best to monitor for a couple more days to see how it looks
Push come to shove if it is a nute deficiency… a little CalMag may also help there to add some calcium. See how things look though before diving further into adding other nutes
Looks like splash. Only 1 leaf. Just keep an eye out for spread. No spread then soldier on.