[sdambr]

Thanks Carolyn for the links.

It is definitely not fungus gnats, the seedlings were up 1.5" and strong with 2 cotyledons at 11:30pm. 8am the next morning half missing with just a 1/2" of stem, cotyledons were gone. A few left lying right next to the stem, two trays.

I usually start in potting mix covered only until the first sign of a seedling, but I am a bit nervous if I don't find the culprit, so this 2nd batch is getting started in a covered container.

I will remove it as soon as the culprit is found.