Diseased tomato seedlings or... ?
What do you guys think: disease or something else? My only guess from following disease keys would be late blight, but I'm not sure. If it's disease, there's not really any way to eradicate it as far as I've read, so it would be best to scrap them rather than possibly contaminate other tomatoes I put in the ground, right? (I started some new seeds a couple days ago, just in case.)
Seedlings are about a month old. As can be seen in the photos, tomatoes look leggy, but I think that's because all the lower leaves (not just the coyledons) have dropped. Stems seem sturdy enough. Tomatillos and peppers planted in the same tray have also lost their lower leaves. Some white mold on top of soil (as seen in photos), but I wouldn't think that it necessarily indicates a problem. (From what I've read, white is most often beneficial.)
As far as I know plants were kept under shop lights about 16 hours/day. I'm not exactly sure how much they've been watered/dried out as some friends were taking care of them during the last month.
I have two trays of tomatoes in this state. I'm hardening some of them off right now just to see what happens, but if it's disease, no hope, right?