Deficiency or Excess?

Im in Soil, ffof, ewc and perlite. 75 to 80F. Rh 65%. Dr earth liquid and top dress. Transplanted from 1g to 5g on 4/28. 800w mars hydro fce8000. Ph water to 6.5. 2 ACI fans running. I gave them some PK 2 weeks ago thinking I had an issue.

What do you guys think the problem is.

I gave them plain water today ph'd to 6.4.

I was wondering should I water to runoff? I did 7 cups in 5g pots