they need to be transplanted, some of those are root bound and strangling your plant of oxygen, even some browning, image what it looks like in the center, the one doesn’t have much of a rootball, probably from overwatering.
your main issues is from bad watering practices..
is that floor cold? pots should be on something for airflow underneath..
transplant into new
promix, don’t be mucking around with the ph etc, no runoff, feed lightly and only water when needed..
i use
promix and barely feed them with each watering, if i have problems it was caused by me, not the
promix.
promix is like the easiest medium to grow in because you don’t need to do anything.
you want to be doing something everyday with your plants than grow in hydro,,