The leaves are curling under.

The second set of leaves on one of my plants are curling under is this normal?

depends on how they are curling, leafs curl a little bit under their wieght sometimes, but if they appear DROOPY you may have a over or under watering issue.

no they arent droopy just curled in a little spiral.

i just had several plants doing that.. i think it's because I started them in potting soil with not the greatest drainage, then I drenched them with water. I figured out how to not water them everyday and now they're starting to recover. 2 days without a watering and the soil is still wet, with the 400watt light on 24 hours a day. As soon as they're big enough I"m transplanting into a soilless medium.