Cannabis seedling has curling up leafs?

Hi guys, me again, the annoying first time grower maybe being paranoid, maybe not..

I have a possible issue with a plant, one is looking good (to me) the other has some slight leaf damage for some reason... I was wondering if someone could diagnose it?

They are White Widow autos about 6 days in after being popped from seed. Lighting 24/hr on a 100w SF1000 in the range of around 30cm.

I did think I had fungal gnats as I saw a spider or what looked like a spider crawling in the peat pellets, but it was probably just a small insect that came with the medium or came from outside as I am in the country, I have some mosquito dunks enroute and I haven;t seen any in the 4 traps I have set nor any coming from the soil.

I have attached the healthy seedling for reference, and the last 2 photos is the seedling with some leaf damage..

Might be nothing or might be your light is too close. I put my seedlings under my sf 1000 about a week after they sprout. I start around 20 inches (50cm) below the light. If you notice the leaves continue to curl up on the edges like that I would bump the height of the light up some.