Please help asap,What could be happening here!

root bound obvously...

how often do you give them water ? Is this teh first time you are growing ?

Transplant and water.

Overwatered = limp leaves and stiff stems. Underwatered = limp leaves and limp stems.

For me several points which u can might cover: - check your environment if its good like temp/rh & in and exale air aswell as air movement from fan and distance from light - looks overwatered for me - check how often you are watering. In veg phase u never follow a watering schedule, like your plants are telling when they need water again (dropping dry leaves, dry soil). also stick your fingers inside your medium/soil and see. If its still wet I would not water. Only water when its dry and then water 10-15% of pots volume and see before drain is coming out. - transplant your plants into bigger pots for better roots system and plant development

Chuckwaggon so a gallon and two capsules of the Hydrogen peroxide bottle?

Your pots are too small. And plants 2 big. I've done small pots before 'mep The same time waiting for them to flower as in a big pot. With much smaller phenos Anyways, they need watering at least 2-3x a day. They take up big fluid from their sub.. and in no way. Do them small pots have enuf space to hold more then a few hrs worth. They're all still in the fixable window except 1 maybe, the one with the nodes drooping down. That's 70-30 that'll come back. They aren't hanging right down. So I'd get to giving plain water. And then giving them new pots and feeding them until needed.

Your wTering schedule looks lil off. Maybe amount or how often. I like to let soil dry out almost completly before i water again and i stay on the side of caution not to water to fast or to much at 1 time. Or you might have a salt lockout to much of a nute leftover built up. Can water with gallon of water with 2 capfulls of hydrogen peroxide to help break it down.