Sorry I wasn't able to respond sooner, my net connection was down all night.

Ok, safety first here...I must agree with Dejayou...if that light falls and breaks, you have a good chance for a fire.

Wow, those are some sick looking girls. You might be killing them with kindness. Looks like you over fed them. Or your PH could be out of scope.

What are you feeding them and how much? Check the ph of your runoff water to see if it's within range.

I would only water them with 1/4 strength nutes and see what happens with the new growth over the next 2 weeks.