Seedlings in LC soilless mix #2, about a week from transplant into 5.5" pots. First sets of fan leaves curling on a few of them... temp/rh averaging 79F/30%. Difficult maintaining anything above 25%, frequently spraying/adding damp cloths. Think its a humidity issue?
Also noticing slight purple coloring at new growth... can provide pics later tonight.
Could be cold floor, put pots on 2x4 blocks to allow ambient air under pot. You don't want a cold root zone in a wet pot. Look up pics on "Over watered Cannabis." If you're watering more than once a week right now that's likely it. The humidity of your room shouldn't be that big of deal yet. A few bowls of water placed near your babies should keep their little envelope of air wetter if need be. It will evaporate and raise their immediate RH.
Typical transplant shock is anywhere from 3-10 days, that's pretty normal.
Might not be your issue but those are easy to rule out. Best of luck.