Well, I don’t know even quite how to Google this. It defies my description so here:
Bottom of the pots are soaked? Root rotted? Overwatering?
They were dry a day or two ago, but had just gotten a bit over watered just before. So yeah, could be.
I saw a DJ short interview he said he waters every 4 days. Waits till the leaves start to droop. The roots need the oxygen he said.
Looks like something has been feasting.That sucks hope you get it under control.I’ve been doing a bath of some rubbing alcohol and some dish soap in some RO water and giving them a spritz bath letting the side sit for like 20 min.Cleared that shit right up with my bugs.
I normally had been hitting them 2-3 days, but I defoliated and watered the same day and they held that water for 5 days. Was pretty wet, I should’ve put some paper towel under them.
Turn the leaves over and look at them with a magnifying glass. Sure looks like bug damage…
Hard to tell from a distance, but if I were a betting man, I’d place my $$$ down on thrips. Try to image one. Usually you can see some thrip turds there as well, it’ll be dark spots on the silver parts. Rip to the store and get caterpillar killer BTK, it’ll wipe out the thrips in 3 days.
EDIT: BTK is safe for humans.
I’ve checked the leaves I cut all over, with 30x and 60x lenses. Would they be pretty apparent at that magnification?
They, indeed, would!! If no bugs, overwatering might very well be the cause. Pull a still-attached leaf and go over it with a fine-toothed comb!! Good luck, SS/BW…mister 
Almost guarantee you’ve got spider mites or something. Should be tiny little green/yellow dots with black spots moving around with even tinier white spots around them. The black spots are the mites and the white spots are their eggs.
The damage you’re seeing is them sucking the chlorophyll out of the leaves.
Aside from that you’ve got a slight potassium deficiency (to me) which is where the rusted coloring is coming from.
If you’re in the home stretch just try and forget you saw it, do a bud wash when you harvest (lots of info on here and videos on the web about it, I do just one bucket with lemon water and one normal to wash the lemon water off) and you’ll remove most of the bugs. Be sure to spin off all the excess water cause it’ll speed up the bit of drying you set yourself back.
You’ll be fine boss, shit happens when you party naked I always say
They’d be fairly obvious once you know what you’re looking for, this is with an electronic microscope probably a bit over 60x.
Also I wanna say thrips leave a oily looking residue (could be aphids) on plants that make it seem like something is leaking on them in random spots. Though all have relatively the same looking leaf damage.
One of them is in your roots, the other lives and breeds IN YOUR NUGS, both are very hard to spot if you don’t know what you’re looking for but I don’t see the telltale oily residue for the one so I’d rule that out and focus on it being mites or whichever lives in the soil/roots
I’m almost home and can take a pic of my spider mite damage so you can definitively compare yours. Give me 15 mins
Try and get a really good image of the damage. Whichever bug is doing it they all have a signature style. Mites leave little scratch marks and thrips are usually silvering of the leaf with black specks of shit. Mites are slow and easy to spot.
Well, I scoped and scoped. No sight of anything on the leaves.
So I’d turn my attention to the roots- but I may just leave it be. I’ve got a few weeks left and the buds look good still. I’ll give special attention to water, and may add some bone meal. But this is only 1st/2nd run for this soil batch. May just settle out.
