whats wrong with my plants?

i noticed it last night when i went in to water. im thinking potassium deficient, but im not positive thats why im asking. you can look at the pics of one plant i took last night and see its starting on the older leaves. here are a few pics. these are of 2 different plants, but it is the same on all of them

There is no pics

sry bro, its fixed

not 100% sure just by looking but to me they look like they hungry

No its just the common(at this stage) N deficiency. Next feed give them a hit of veg nutes then go back to flowering nutes from then on. Not a major problem atm.

*BUDS said:

No its just the common(at this stage) N deficiency. Next feed give them a hit of veg nutes then go back to flowering nutes from then on. Not a major problem atm.

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alright, i hope this is the case. its making me crazy, this damn promix is outta here after this grow, im going back to ffof. im running H&G nutes man, and from what i understand, they just came out with a N booster. maybe ill check it out.