new growth turning yellow

Good morning guys, as I have explained before unfortunately every month I have to spend a few days in the hospital and have to leave my babies unattended and every time some shit happens. This morning we had shitty weather where I live and the power went out about an hour after the lights came...

Has Anyone Ever Seen This before? What Exactly Am I Dealing With Here? Not Mine, Its A Friend’s Grow, Just Trying To Give A Helping Hand & Save These Girls From Disaster.