thanks...i also have the same issue but i havent really been feeding her anything. but the thing though is that the other strain sitting next to her doesnt yellow up on the leaves. so im pretty sure it aint the soil. what should i feed her then? more p or more n?
Is she flowering or still vegging?
They dont really need much N during flowering stage, just enough to keep the leaves healthy.
As far as the other plants not yellowing up, its just the way it is. Plants are like fingerprints. While all of them are very very similiar in nature, every one is unique to itself.
So while 1 plant might be starving for nutes, another might not be ready for them yet. There is no "set in stone" feeding schedules, etc. Even though companies like FF provide feeding charts and such, they are merely guidelines for when to provide nutes.
In the end, its up to the plants to tell you when they want nutes.