Looks like light stress.
You only need max of 300 ppfd right now.
My lights run at 20% in early veg and 40% in late veg. I turn it up gradually in flower.
Download the Photone app for your phone, it's a useful tool.
If these are photoperiod plants, consider after you germinate your seeds to plant them in solo cups first and after they develop a little then transplant into final pot.
Good luck witht he grow!