leaf discoloration

my plants are all flowering and some of the lower leaves are starting to turn a lighter green color that before, is this normal during flowering?

that didnt help at all

Yes, in flowering the lower leaves will start to turn yellow. Its normal. This is caused by the plant using up alot of nitrogen, producing your beloved buds....

attached is a heathy Northern Lights#5 plant right before chop....

wow nice plant... if it were me i think i would remove some of those yellow leaves... howeverm they look finished...nice job.

i bump mine with just a splash of nitrogen when they do this. just a splash. to much will cause veg growth and i don't want that. just a splash.