I am doing a two bucket hydroponic grow.
There is no discoloration to the leaves and I have started the 12/12 cycle.
The leaves look like nute lockout almost. Leaves are curling down and in on themselves with some disfiguration.
Bud locations are showing slight darkening tips/blackish
My ph is running 4.5 to 5 and I wondered in my ph might be too low but I've never seen this happen before and it isn't my first grow.
PPM is running 1000 to 1200 which is within the guidelines for the budding cycle and I do have some bud sites forming. I have experienced low yield in the past and figured that it was nute issues because of a lack of a ppm meter. Well I have a ppm meter now.
I have had a timer issue and just replaced the timer with a new one and was wondering could this be a light issue?
Any and all help would be highly appreciated because I need these meds.

The best pictures I could take hope you guys can help.
http://i852.photobucket.com/albums/a...dawg/photo.jpg
http://i852.photobucket.com/albums/a...awg/photo4.jpg
http://i852.photobucket.com/albums/a...awg/photo3.jpg
http://i852.photobucket.com/albums/a...g/photo2-1.jpg