Serrated tips up?

I was wondering if anyone could tell me why they are pointing up iam finding alot of conflicting info also second plant is getting real green is that to much nitro

Leaf edge curl up is usually attributed to humidity and heat issues.

explain a little more about how you are growing them?

light?
Temps?
RH?
pH?
Medium?
Medium?
Feeding routine?
Air movement?
Intake and exhaust?

Everything you can list please do so.

yes your other plant looks a fair bit green and starting to look waxy/shiny.

your medium looks like coco? Or is it a high grade of soil?

Please let us all know as much as you can.

1000w 100pc led grow light about 15 inches away temp stays about 75 degrees humidity is low at under 50% ph is about 7 7.5 medium is garden soil and pro mix fed every 3 day when soil is almost dry to second knuckle i got two fans one on ether end of the room circulating the air its an attic so no exuast except windows

The second one that I know is too much nitrogen but I don't know how to get the nitrogen down or how to get them to lighten up again

Not to mention this little guy was grown at the same time but half the size