Nitrogen Dificiency. What do you think?

I'm about 95 Percent sure this is Nitrogen Dif, but the 5 percent uncertain is from the 2 extremely yellow leaves at the top of my plant. The entire plant is losing it's yellow like it's supposed too from the bottom up right now. I'm about 25 days into flowering. I just want to make sure that it isn't something else causing this. Also it seems as though it is happening on one side of my plant...



sorry for the shitty pictures, but it's the only camera I have. The white/yellow looking one is the leaf i'm talking about. There is another one just like it on the same cola. What I find weird about it is that it's at the top of the plant and isn't affecting any where else. It is pure yellow and happened very quickly. The other leaf is just what the plant is starting to look like from the bottom up. Running out of Nitrogen like she is supposed to.

The yellow leafs are freaking me out though.

P.S. I know i'm probably being a little too worried, but i just want to catch it if it's anything else

Yellowing leaves with green veins from what I can tell from yours is a common issue for me, and is usually Mg. Nitrogen would be complete yellowing including veins, very common also, but not what I see.

Ph first. There is nothing seriously wrong, but you may want to give them a snack. Don't go overboard, your petioles are purple, so overfeeding may do more harm than good. All in all, everything looks nice. Please remember that nutrients are absorbed differently according to ph, so try to reason that first.

Get some Calmag and give her some grow nutes in the water in between, not too much... you just wanna compensate a bit.

Thanks guys! I have been giving them a good amount of nutrients . Cal/mag including. I think i know what happened lol. I'm using General organic nutrients and from waht I have read they bring down the Ph a good amount when you have the cocktail of nutrients together. I can't test the PH of the mixed nutriets after because i have the drops and you can't read that in brown water lol. Well anyways i lowered my ph before i put the nutrients in and i think they dropped it to low for the liking of m plant.

You're supposed to PH the water AFTER adding nutes, any nutes not just GH. It's the last thing to do before watering