hst doesn't cause leaf symptoms beside soem temporary wilt if the vascular tissue is too damaged.
Can see leaves touching the soil, so ignore those - good to remove them too if physically lying on the soil.
The plants with paling from tip-in on leaves and bottom-up on plants is a Nitrogen deficiency. When this progresses you do get some blotchy dead spots.
the fiist picure here in the questions has some red in it. that's probably from cold temps at night (68f and below) or genetics. Other than that the only symptom i see is N-deficiency for sure. the overall lushness of the plant is a bit on pale side, but grow lights often have that effect. Assess that in normal light and if not quite as green as you want, up overall conventration of fertilizers 10% (10% bump to each dose of what you regularly use will do it evenly). you are in soilless so it should be the full diet each irrigation anyway.