lamens terms please @HerbalEduthis can happen from genetic chimera locally on the plant ...
Ive spent hours looking there is nothing.could of been a worm . Just look around if not its gone turned into a moth so on .
Double ended hps 1000 still about 2 ft away from lights. They are set up at 8 ftThat's because there are no bugs it's light burn.
What light and how far away from the plant tops is it?
Im seeing this on the leaves even midway through the plants, actually the top of the canopy doesn't have this damageThis light needs to be at least 30 inches away from the top of your plants bud.
60% power setting.
agree with this^^^Trust me bud I know what I'm talking about.
Light at least 30" above canopy / top of your plants.
Don't let them grow closer.
65% power setting and the problem will go away.
Plants in trouble.
I can see the leaves canoeing and a the edges will burn soon.