Whats going on with these Clones?

[Verbalist]

Two of them look like that and rest of them are fine.
two of them having top leaves curling up or the leave tips twisting around and the edges looks little crispy.


Theyre inside the dome, no ventilation yet - just removing the lid every day to mist the lid then put it back.
Pellets & cubes are moist, RH stays between 80-90%.
Should not be light burn/stress since Im using only 20W LED around 30-40cm above the plants.
Been following this guide

Others looks kinda happy/normal to me, like this one:

 

[Verbalist]

Also the newest clone started to act like this after removing the lid for 5mins.

Leaves praying upwards kinda normal but there was actually no light source above… And looks like the tips would curl up a bit(?)

 

[40yrs]

When leaves curl up. Its atmosphere. Looks like humidity off. When leaves curl down. Roots are in need of care

 

[013]

there is too much real estate (nodes and foliage) to keep alive while the cutting tries to develop roots, think you need to learn to cut better.….. rock wool holds a lot of water and is prolly not the best way to clone, think most use either rapid rooters, bubble cloner, well rinsed perlite or plain water.

@Virgin Ground has a neat perlite clone method going,