NUTE DEF/OVER NUTE or NOT???

I let my girls get a little dry and watered them according to FFOF fox farm and one of my branches showed signs of severe burning. Only one branch, and the rest of my girls are doing fine, one of them showed signs of over nitrogen, which I followed the recipe at half nutes. These girls are flowering and am wondering what could make just one branch literally crisp the leaves when all the rest of my garden shows no heat stress. Is this from all of a sudden using big bloom with my tiger bloom? I just started using them together because I read somewhere that you have to. Does bat guano and earthworm castings fry your leaves on one branch while all the rest of them are getting bigger and better trichomes forming on them? I need some info that might help me out. I have watered with plain water for the last three days, seems to be pulling through. I just don't understand how I can get the leaf scorch on one branch and the rest are fine if not better. For those wondering, on this one branch, the leaves turned black like somebody put fire to them with dark leaf burn on the whole branch. Freaking me out!!!

Could we see some Pics?

This is what the branch looks like, you really can't see the scorched black tips of the curled up leaves, but they are black and do not look healthy at all. I keep the tent at 67-72 Fahrenheit, use damp rid to remove humidity problems and water when the soil is dry. I let my girls have no water for 5 days and they started to droop from under watering, but when I did water, this particular branch did not have curled up blackened leaves. It happened after adding the nutes, which is weird that no other branches or plants have experienced this change.