looks like PM to me. Ive had to deal with a spot of it lately in one of my tents. I brought in a clone, and had to kill it.
the first photo, the greener one, looks a little different to me, though i see the pm on that too. (im not speaking of the center of the plant. I'm talking about the hollow outline spots that sort of look like a splotch.)
there are a few little lines by your thumbnail, that look a little bit like a thrip chew mark. I had those once, and i didnt know what those little lines were till my plant was almost dead. they are so tiny you can barely see them, and they hide on the undersides of the leaves, tucked up against the veins. they're NASTY little buggers. you will have to deep clean everything, and do a few weeks treatment. you may have a couple of issues starting there. or the white stuff im seeing is the baking sode. but im pretty sure that's thrips bites by your thumb
fortunately Green Cleaner will take care of both of those issues, and its not too expensive. you give it as a foliar spray, and it'll kill that stuff off. its a liquid miticide, takes care of several issues, and is good till late in flower.
I really think the white stuff is soda residue. Those lines are your problem. Those guys are hiding out in your grow room somewhere, and they will keep coming back onto your plants until you treat with a miticide. I had the same problem for about 3 months, couldnt figure out wtf was happening to them. As for green cleaner,the stuff is supposed to be safe up till a week before harvest. I use it as a maintenance spray, to prevent PM, or any of those nasty little buggers from coming back into my room. I havent had any problems yet, with turning the lights off, and making sure they are dried w/fans before i turn back on. Matter of fact, I just did a spray at about 4am this morning. thats why i didnt reply. I had to go to sleep early, because my lights go off at an odd hour, and i had to spray. I get ya though. too bad you are giving up on autos. they are pretty amazing. I grew them alone for almost 4 years before i got my first photo seed. Whatever the problem is, you have to treat the room around the plant as well, or the problem will just hide in the corners and sneak back when you aren't looking. I sprayed from floor to ceiling, when i found those lines on my plants, and did a full soil soak as well as a foliar.
