Temps are up today as I checked and I think I figured out why my girls are growing single leaves... just like mom. I think it's the heat, temps where up to 90 degrees inside the tent. Right now I'm scrambling to get bottles, 2 litter jugs, everything that's plastic and holds water inside my freezer. The plan is to put those in the grow tomorrow and see some temp drops. Hopefully in the high 70s low 80s. Right now i have about 10 litters of water freezing in different containers. According to what i researched online this method worked great for middle easterners back in the day. Also, although temps have been rather insane this week, I'm still seeing and explosion of root growth. This at least is good news. Although the leaves are curling, and my girls are hurtin... I think it will work out.