purple widow

This is my first grow, chose to do a Purple Widow Auto Strain from MCS. I germed two seeds(only keeping one) about 10 days ago. Both sprouted 2/15/18. Im growing in a 18×24x64" grow box i made and running one 600w king plus led light (120 tru watts) and two 5500k 45w cfls. For ventilation i have...

I planted this clone 4 days ago, it looked fine, all of the other ones look okay, this one is doing some weird downward curling inward type thing. Anyone know what could be up? The leaves are not dry or crispy. The cube that it's in his wet but not soaked.