Hey Azad,
So these girls are on day 8 and generally good growth so far. I’ve seen faster and slower so finding these to be just about normal. Serious growth probably won’t kick off for another week or two while roots are establishing. The colour may be a little off due to the lighting I’m using, but yeah, looks pretty normal, not a dark green for the leaves and the new growth is slightly pale. Curling of the leaf edges can be due to light intensity, not taco’ing though where the leaves fold up due to heat stress. Not too sure what the effects are with low RH for seedlings, but doubt the leaf curling is due to it. I would use my humidifier but that thing can go way out of whack, few to many times I come into the tent to find my meter reading 95% on my last grow.
This is my second grow so take what I say with a pinch of salt! But more than happy to help where I can
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