Seedlings showing little to no growth

Hi again everyone. I have an update.
The last time I updated the girls got watered, they got raised(closer to light) by about 2", I turned the space heater off, resulting in temps lowered, and added water to a shallow pan(raising the humidity)

Over the next couple days the girls seemed to respond well to the adjustments, but some of the lower leaves are still fainter.

Temp (24hrs): 75-79 F
RH (24 hrs): 50-57 %
Light distance: ~33"

Finally pics of the girls(bic lighter to show the size of the plants

The first one is jack herer(sex unknown), this is one of the best 2( in terms of look and size)
IMG_3015.JPG

Next one is the kalishnakova. The bottom leaves look yellower, not sure if this is big deal or not
IMG_3016.JPG

The 3rd is the cheese which seems to be recovering well, the other leaves are about crumpled and gone(should I cut them off?)IMG_3017.JPG

The last one is the other jack herer(sex unknown). Seems to be doing well, lower leaves are showing some stressIMG_3018.JPG

Again thanks for looking everyone, you're input and thoughts are greatly appreciated. On another note I will be starting a grow journal(hopefully tomorrrow).
 
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