ganjamark420 Looks like chlorosis to much nitrogen

ganjamark420 Or they are starving so there fading out water until run off and check the run off ppm

mystrain420 Looks like a deficiency, if you’re feeding properly it’s possible she’s experiencing a lockout. I’d flush @6.3 ph then start her back on a low strength bloom feed since she appears to be in early flower. You should look up the cannabis deficiency chart also. Disclaimer-I usually grow in coco. Good luck👍🏾