Warum hängen die Blätter und werden so hell

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