Burned tips and curly leaves

I'd recommend pulling the water back and making sure it is the proper ph. Seems like over watering/nute burn.

Potrebbe essere un over, prova a dare 2-3 volte acqua con ph 6,3- 6,5 . Buona crescita amico spero di esserti stato utile

Your ph is set at the low end for soil growing. 6.5 may be much better for your girls. If your seeing leaf clawing, then that's a sign of to much nutrients. When growing in amended soils, feed shouldn't be added until you see they need it. A plant that size would not have used up the nutes that were already provided in the soil. Cheers