Warum hängen die Blätter und werden so hell

Hi, First of all, looked like you took clones of a sick or unhealthy plant = never a good start. Secondly your plant in question is too big for the container it's growing in. I also see signs of over-watering,(drooping down/floppy leaves. I can't see any mention of nutrients or feed anywhere so hard to comment there but looks too be lack of nitrogen and maybe calcium/ magnesium, there's are the most commonly required nutrients at this stage. Are you checking the phone of your water? Make sure it's on the correct zone 5.5-6.5 (I prefer the 6/6.6 range) The issue is most likely container too small therefore lack of root system and over watering.

Your temp doesn't match the humidity. The plant is basically underwater in the humid air and can't transpire anymore, becoming too damp. VPD - a simple table as a reference 21.5 = 61% - 53%, flowering = 51-41% 22.5 = 63% - 55%, flowering = 55-45% 23.5 = 64% - 58%, flowering = 57-48% 24.5 = 66% - 60%, flowering = 59-50% 25.5 = 67% - 62%, flowering = 61-53% 26.5 = 68% - 63%, flowering = 62-56% 27.5 = 70% - 65%, flowering = 64-58% 28.5 = 71% - 66%, flowering = 65-59% 29.5 = 72% - 67%, flowering = 66-60% 30.5 = 73% - 68%; flowering = 68-62%

Hey, I think you just meant well and gave them too much water. Just let them dry out for 5-6 days (lower the humidity too, high VPD). They'll be fine again 🌸

Day temp of 68 with humidity of 80%. pH balance looks to have skewed alkaline 7.0 or above. Number of reason why that can happen. No diary of what you have been feeding so impossible to tell precisely what caused the skew. Combination of several things possibly.

Your using clones so they are susceptible to stress more so then from seed until they acclimate. What size pot is it in? Your diary doesn't state much info. This appearance can be several things. It's not always nutrient related so make sure of all her conditions first and only you know if she is in proper growing environment. Mine look like this when they need watering, but this could also be overwatering so dial in the basics first. Good luck

Ca excess and lockouts of other salts if u use CalMag then stop it and then lower it's dosage in few weeks or flush then lower if not check ur tap water ppm and ferts for Ca ppm