Wow…Ten plants. I hope your tent is gigantic.
White widow can get quite large.
Wasn’t expecting all to germinate I’m sure a couple will die off one looks like it has a mutation and one has yet to full shed it’s shell
Just wet that husk with a little water and take a toothpick or tweezers and gently remove the shell.
You can give it a day to see if it falls off, but dont wait too long.
Be careful as its easy to pull up the seedling. Moistening it first will help slide it off.