ivik80answered grow question 5 years ago It depends, if it's an auto I would check the roots everyday, as soon as they start getting outside your pot it's time to move them.
Usually I do that around day 7-10. Or you could move as soon as they get their second set of real leaf's.
Just make sure the soil you have it in now is moist when you move them and water the entire pot after you moved them, also best to move to the same soil. This will reduce stress.