Is this damping off?
I noticed the first leaf of of my onion seedlings drooping yesterday. Today, it has wilted completely. I know that once the cotelydon eventually withers and dies, but I thought that happened after the third true leaf appeared.
Yesterday I was transplanting some shallots from an APS tray and noticed a tiny bit of white mold near the capillary mat. Now I'm nervous about some kind of terrible disease (although the shallots seem to be OK so far).