Aztech Genetics White Widow Auto 56l pot

Plant is 7 weeks from seed today. I gave plant it's first flush with some ph'd water just to try combat any excess salt build up that may have occurred when over feeding signs showed last week. I have lowered nutes as well to 2ml A + B nutes each feed. I will try and build this up again but so far she doesn't like anything over 2.5 ml to a litre. I will also be adding PK 13/14 later in the grow.