would low temp's cause drooping? right now my lights pretty much keep my box warm but when there off it drops quite a bit , its cold here right now and box this morning was 60 degree's inside lights are back on and ive switched to 2700k CFL's for flowering. next watering im going to be adding nutes. the leaves just arnt purky looking like they were before i started flowering
I had my plants go almost all the way through november and the temp got down to about 40. The only time they really started to droop was when the rain picked up. I would say you are over watering or possibly underwatering.