I've seen quite a few people question deformed leaves on seedlings, myself included. I believe the problem that you have isn't that serious at all. If I'm right it's cause by your soil having good amount of nutrients in it to start with. In other words the soil is a little "Hot". I've had the same trouble using Fox Farm Ocean Forest. Things go back to normal after the seedlings reach a week or 2 in age. If these curled leaves bother you too much, next time try doing a minor flush of the soil before you start your seeds(this works as long as you aren't using a heavy time release soil such as MG 3-6 month formula.):thumbsup::thumbsup: