a modest amount of nutes means nothing we need to exactly how much you gave them how far apart are these feedings?

how often do you water them underwatering them is better than too much.

from what it looks you locked out nitrogen with the high PH but since then you havent added anything thus making them N deficient even more so do this.

go get some 12-0-0 what yoy have is too high of K going on there too you need just N, you may also have hard water this will affect things too so you need to test that area too.