mid-flower coloring

everything is on week 8 of flower and my plants are fading is this normal or is it the fox farm cha-ching I have used as directed.
in coco rUn off (says my cappy meter) 5.6
an 11-1200 tds
if this isn't normal it's the meters... it looks like a real problem

the most discolored are the unknown clones I let stay in too small of a pot 4 sure... just had the room to not trash them.
haven't started the flush

Looking good. Week 8 is end or nearing end of flower not mid flower

Everything looks out of wack but in reality it's not. You're ending flower and almost ready to chop. The plants is sucking up all the nutrients in its leaves so it can metabolize it into sugars. The only thing I noticed was some of those ladies need a drink.

Also, clean that damn tent up. Soil all over the floor like that is a great at hiding & harboring unwanted guests.