Did you check the main stem for any damage? Maybe something happened when the lights were on it like a nasty kink or a rip? I could see this happening easily if the stem broke and nothing could reach the top of the plant anymore.

Good luck!
Vancefish Reviewed by Vancefish on . Plant in Flower Dying I have four white widow plants in week 5 of flowering. Yesterday night one of my plants encountered a serious problem. The leaves on the top foot and a half or so of the plant started rapidly dying. They would turn darker green, curl up and die. It was a pretty quick process. Probably about half of the leaves on the top 18 inces of the plant died or are dying. I trimmed off most of them, but there are still some on there so I took a couple pictures. I water and feed them every other day, but I Rating: 5