Those pictures look to me more like a watering too frequently issue. Give us an idea about your watering habits, how often/much, how long does soil take to dry completely (if you know).

The leaves don't look bad, just saggy. That's what suggests the watering issue to me. Sagging like that usually equals under/overwatering. Cannabis roots need plenty of oxygen, especially in container gardening:thumbsup: Water displaces oxygen in the soil. Try to do your watering at lights on, if it looks like it needs it really late in the light cycle, wait till the next lights on. It will encourage some evaporation throughout the day, also it should let some oxygen in the soil by lights out. Roots use oxygen during the night cycle. If you keep the medium too moist, eventually root rot and a number of other things can put you past the point of no return. Weed has much better chance of surviving drought than drowning.

I say, let em get bone dry and see if they perk back up.