Brown spots and curled down fan leaves (seems like they are not responding to light). Leaves from branches seem fine. Day 31 veg

Doesn't look so well bro tbh I think you might have done some extensive damage to those roots with the vinegar lots of symptoms going on and if it's about to flower its the worst time it could happen. You might be wasting a lot of time for nothing with this one man cause it won't yield anything special and it will take long to finish unless you get her back on track if she's not going into flowering. Better pop another one just in case as a backup , good luck .

Your leaves appear to be growing abnormally large, and they are sagging really low. It’s possible the light is nowhere near close enough to that plant and you’re using too much water. Do be informed that you should understand the function of stomata in plants. If it’s too humid in the tent for the plants they will stop transpiring water through their stomata, your soil will stay moist and the roots of the plant will become subject to disease. And about the fat leaves being an indication that light is too far away. In nature as trees and other plants grow, it becomes harder for the sun to reach lower leaves. And you may think I’m lying but plants will grow wider leaves in an effort to increase photosynthesis. Like, it has brains yo hehe. Thats my input. I’m no doctor thoufg

This is a very stressed plant... Seems like an issue with to little water. The leaves look all dry, Im not sure how much "to much" vinegar you have been using. but if you have been using to much of something, water the plant with clean water and enough so that it "flushes" out the bad nutrients you have put into the soil.

Super stressed plant To much light Not enough water. The discoloring IS from the light. The light makes the system Go fast . Water evaporates. Nutrients stay in the plant and burn her too. Quick fix. More water less light