Are you sure that the plant isn't starving? How long have you been growing it? It may be time to start feeding it.

I only have one grow under my belt, and it's still flowering 81 days after going 12/12 and I had some similar sounding symptoms around week 3 of veg, as I hadn't fed my plants yet. Added food to water, bingo, happy again. I will add that I was using RO water at the same time and not adding CalMag, so I may have had a Ca deficiency at the same time. When I started feeding I stopped using the RO water (it's for the fishtank anyway).

Good luck.
herbaltivo Reviewed by herbaltivo on . low leaves browning and curling (using no ferts) ok so my plant is to about 5 leaf sets. i started LSTing about a week ago. i noticed this morning that the lower leaves were starting to brown, droop, and curl under. i thought maybe it needed water, so i watered it and it didnt help. i know these are symptoms of fert burn, but i havnt given it any fertilizer, and its been fine till now. any ideas? Rating: 5