Hmm, I never had seedlings shrivel up like that for humidity reasons. I believe this is a PH issue, and possibly High PPMs. After germination I would throw them in to a cloner with 40PPM water and a PH of 5.8. I would use a small T5 bulb since they cant withstand too much light at that stage. After I would lightly feed after a week or so. Make sure they are not getting too much light, or possibly heat from the bulb.
After two weeks I would use a stronger light.
After two weeks I would use a stronger light.