I agree that the soil looks too wet. Plastic pots don't dry well, and cannabis doesn't like wet soil. It would help to cut some holes in the plastic to let it drain and breathe.
Is the perlite mixed into the medium ? Asking because it looks like it’s sprinkled on top
I was thinking the same thing, possible fungus gnats in the root zone. Time to put some yellow sticky traps out to confirm their presence, if you do have them you’ll need to allow the top layer of soil to dry out for a week or two, the sticky traps will trap the winged adults but the larvae will have to be subjected to inhospitable conditions, ie dry soil, with diatomaceous earth layered lightly over all of the top soil. As long as you have the option to water them from the bottom ie in saucer and allow them to wick up water. Keeping the top soil dry will kill off the larvae and the DE will shred them up pretty badly. Just gotta knock down a few lifecycles in a row and it should make a difference.
I took my roots out they are pretty white and they were looking good u know what I watered them with a liter of water and then I left it for a buddy to look after for about 10-12 days and he didn't water and when he actually did they started looking like that but suprisingly some of em were doing alright
