34 days into flowering and leaves severely yellowing!

Alright, well my plants are 34 days into flowering and my leaves are yellowing on my 2nd plant all the way to the top. It is a soil grow and I am flowering with cfls. The leaves are starting to turn to a lighter green but the leaves are definitely not drooping which seems a bit abnormal. pH was adjusted to 6.8. I shouldn't have any nutrient deficiency and the plant is not exhibiting nute burn. Anybody have any idea what might be going on?

Thanks!!!!

need pics please

What leaves are yellowing? Bottom leaves or higher up?

my plant is a week into flowering and the bottom leaves are turning. the plant is sucking all its power to the tops of the of the plant. its healthy keep an eye on it the plants really become prone to mites and sickness. just keep an eye on her.