Help Leaf Cuping, 2nd grow also failing

World of Seeds Northern Lights * Big Bud Auto - DAY 9 from seeding
23watt CFL at 1/2 inches
20hrs on 4 hrs off
watering when 2inches below meter reads less than 2/10
and water upto 5/10 once it reaches 2/10 on rapitest meter
miracle grow soil with no nutes and all big stuff taken out

This is my 2nd attempt after 1st failed attempt.
This is cupping just like the previous one. it was fine and i watered it 24hrs back and today leaf is folding itself a little. Last time this happened and plant turned yellow and died.

1st Attempt URL
https://www.rollitup.org/marijuana-plant-problems/750763-first-grow-new-plant-looks.html

What could this be. Under watering? Over watering? Is it same stress? Is the leaf trying to save water by cupping or it has too much water.

Please help

Don't use mg, you can get medium that's made for growing cannabis for the same price...add a larger flouro and put it an inch or two up..can't see what your talking about in the tiny Pic you posted looks like a normal seedling to me..make sure you are letting tap water sit out a day...that's it man its a seedling it Grows itself just dirt water light...you really can't over water a seedling, make sure it stays moist until the first couple leaf sets..make sure your cfls say daylight on the package....stop using the water meter!!! Just water with common sense, water until its wet and rewater when its starting to dry out at the top a couple days later , when vegging you can let it go a bit dryer than when Its a seedling.. Really all I can advise at this stage, honestly if you can't grow a seedling after the next try listening to what I said here id stick to buying your herb because I got seedlings to grow in clay outside when I was like 14 lol..it is not hard

Relax, they look fine. Stop killing your plants by over thinking things. Forget the water meter, wait until the cup feels light and add a small amount of water. Try taking a cup of the potting mix you are using, fill it up and feel how light it is without any water. When your seedling's cup feels the same add a bit of water.

I took your advice and left the plant alone. THANKS
Increased the light distance a little bit. Its looking good and its day 14


I dont know why but at the end of their 20hr shift in morning i see that the top leaves curl towards each other?
Do i need to increase the sleep time for these for increase light distance. CFL currently at 1.5inches

Keep doing what you're doing and when its A couple inches larger transplant it into the final pot and better soil...