Can’t figure what’s goin on with the one on ri...

Nitrogen/fertilizer toxicity from feeding too much or too often..........or both.

9 cardinal rules of plant growth as defined by Bruce Bugbee, any one of the manufacturing process run at 10% turns they all bottleneck to 10%. I'd guess the right plant is oversaturated with water in the medium which looks to have progressed. Flushing or adding "more moisture" just makes shit worse. 1440 1440 1440 air air air.

Hey dude, had a quick peek, not much to go on, but I noticed week 7 the left plant was in a plastic bucket, while right one was already in its big fabric. Both of them need to be elevated off ground even an inch so that air can reach the centre of the middle. Those fabric pots are deceiving, alot less air makes it inside than you would think. Have fan directly blowing on/ under pots, especially fabrics. You have daytime 85, night 65. 20 degree swing is too much, keep within 10 to prevent unnecessary stress. 40-50% Rh daytime with a 20 degree drop in temps could be pushing Rh to 70-80%rh during lights out, this will increase as plant gets bigger too. Moisture that sits any length of time attracts bacteria this will explode above 77 degrees also. If that moisture is sitting trapped in middle of the pots that can't evaporate, quickly stagnates and causes a slew of problems that can appear like nutrient deficiency or ph imbalance. 80% of indoor grow problems amount to environment. Give or take. Important your only watering early light on.