Need Help !!!

Make sure soil pH is correct. Make sure they are getting the right amount of nutrients. Make sure they are not under or over watered. Make sure your VPD is good (this one is important) you can easily find a VPD chart for every stage of the plants life on the internet. One thing is, if your plant is not thriving in your current condition then you should give it as much dark time as possible, 6 hours is better than 4 for a plant like yours. I hope your find the problem, good luck and happy growing!

Look at what you see first before thinking it’s a water issue. The leaves are turning yellow from top to bottom. The one farthest on the right is showing the most of the deficiency and the rest are following suit IN THE SAME manner. 2. Dry leaves make the plant look like it’s on crack. The plant does not look like it’s on crack, the leaves don’t look dry, as a matter of fact they are still full of water or we would not be able to see a FULL leaf. 1. Check the soil to see how much water you can add. You are going to add a light dose of recharge or some seaweed kelp mixture, for safe measure I would add .25 dose of cal-mag with it ( those purple stalks are rampant) 2. What are your temps and humidity. I think it has more to do with the humidity being high and it’s the start of flower so it’s harder to respirate in a high humidity environment during flower.

I'm with AsNoriu here... they look awfully dry and I think your watering practices aren't doing them much good. When you water, you need to give them enough so there is at least 10-20% runoff... and then let them sit in that runoff for a good 15-20 minutes to see if some of the water is soaked back up into the soil... if it is, give them more water - and keep giving them water until no more water is soaked back up - then you can throw away the excess water. The roots are going to stop growing when they encounter dry soil... and at this stage of the game, you should be giving them at least 1/2 gallon of water a day (so if you give them 1 gallon every other day, that's giving them 1/2 gallon a day)... Once they've been watered properly, you need to then let the soil dry out before giving them anything more ... Finally I'll say the lights have nothing to do with this at all. All of my grows are under 100% lights from their very first day to their very last day.... the only thing that can happen is the plant can get too close to the lights and the leaves might burn or turn crispy if that happens... but lights do NOT do what you are worried about here. Good luck...

@Creepy_steve They are drinking a lot of water, because i think it’s from lights intense. Problems start before doing LST .. and it’s start when i move them in a grow room in a small space.. i’m using 2 mars hydro ts-1000 and from start i was using 50% of dimmer. When i switched to 100 % the problems starts and pots are dry really fast . I’m watering until run off. Not overwatering and not underwatering checking pots by weight and when the soil is dry from 2inches.. i just switched leds on 50% dim and 18/6 light cycle maybe it’ll help ..

Did you recently bend them over? that can cause some odd leaves to grow and some other temporary oddities. The one in middle doesn't seem to have any LST done to it and it is also teh one looking better, right? if droopy last 2 hours (some unusually longn period specifically at end of light cycle), probably giving too much light relative to environment... otherwise something else afoot. If going 50% soil, use more than 30% total of perlite/vermiculite type stuff to improve draining... 70/30 is good for coco because it holds about 2/3rds the water as typical soil. With soil you want 50% perlite/vermiculite/whatever for drainage. you can see how this is roughly proportional. if droop occurs after watering, this will likely eliminate that.

think they are a bit hungry, thats first second i think you water them wrong, not enough or too little too often, with such size girls pot should be watered fully, without dry pockets. girl in the middle dries slowest, thats why look best, she gets moist from neighbors my guess ...