help with yellow leavplzes

Some of the lower leaves are turning yellow on me but still have some green in them i stopped feed and gave straight water but see no change any ideas? first pic is lower leaves second is top of the plant.

They look hungry to me. Also check your runoff ph, that may be locking out the nutes. Notice the light color in the new growth and of course the fan leaves. They seem starved.

how often do u water. looks like potential over-watering

i water when soil is dry. which is about every 3-4 days.

Yellowing like that could very well be hungry for some N, but first tell us what and how often you were feeding.

i use foxfarm bigbloom once a week at 2tbls per gallon

i'm kinda of leaning toward a N diff,