If they're sprouting through the soil period, I'd let some light on them.

If this is what I think it is, it happened to me and I just let the remaining seed container stay on the plant for a few days, and when it didn't fall off I pulled it off very gently myself.

Seriously though, try and get some pics if you can, or some of the pros on this board won't even bother responding. :thumbsup:

It's hard to diagnose the problem without knowing what the problem is!

<3