Plant looking sickly

[wisco_grower]

Hey friends, I have a gorilla glue auto from fast buds that I need some help on please. Everything was looking good until two days ago leaves started to yellow/light green, pHing around 6.2, 25 days old,

 

[Arthur]

Wrong section. Post this in the infirmary, there is a questionnaire at the top of the infirmary copy and paste, and fill in as much as possible. Help will arrive soon.