defficiency

Hey everyone! Recently, I decided to try growing in DWC. I've had 4 grows past 2 years in soil. I'm growing 2 plants in DWC: (PLP) Pink Love Poison Auto by Inseedious Seeds (around 60 days old) & (GS) Strawberry Gorilla Auto (around 29 days old). GENERAL INFO: I have a 20L reservoir that...