Paging Dr. Greenthumb!!(nitrogen too high?)

I have noticed this starting about a week ago and cannot seem to place it, i thought it was water spot burns but i think it may be too much nitrogen, I noticed the plant is transpiring alot during sleep and she is a real dark green. Its only affecting the older fan leaves right now. I am a noob so that is always a factor also! I need some input gents!and a solution. Much Appreciated!

White Berry (LST)
FFOF
ph run off about 6.6
gh nutes
In this soil since seedling.

^^^bump^^^

are you ozonating your water? It looks like the same problem I was having with my Bubble Gum. Just add a water stone and pump air into you water for 15 min before watering.

No I'm not. Do you think that could be the cause? I only fix a gallon at a time which dosent last long and I shake it up alot before using.I know excessive nitrogen can make your plant sweat at night , which she is doing alot of. I was thinking of transplanting to a new pot and soil and just water feeding her to see if it clears up.I was plannung on going on 12/12 next week and was hoping to correct this before hand.

Transplanting is a good idea. It likely is too much nitrogen if it is sweeting. I must have missed that the first time I read it (I was stoned). I'd do what you have planed and see if the browning stops. If it doesn't try the water stone. It saved my Sativas!