It wouldn't even be worth saving those esp from seed. Cut your losses and start over dude
Don't know why people keep talking about soil brands. I don't have any soil brands in my country. Never had a problem.
I'm gonna order new seeds, but I have some larger plants that I'm relying on right now, and they look kind of similar.
I have to figure out what is causing this or I won't be able to sleep at night.
The environment is fine, light is 400w. No issues there.