Seedlings with curling leaves

[SueCT]

My seedlings look aweful a couple of weeks after transplanting from seed starting mix into miracle grow potting mix. It is what I have always used. I see a lot of dirt/potting mix on them, I wasn't super clean/careful repotting them and have turned them upside down a time or two, to check the roots and underside of leaves. I am stumped. Aphids I am not seeing? every once in a while I think I see a fungus gnat move while watering out of the corner of my eye but if there, they certainly aren't heavily infested. I removed a couple from the cups and roots are developing but not extensive yet, so its hard to remove them and keep the root ball intact. Already tore some roots trying it one, but they were certainly not water logged. I was worried about over watering. Then I thought maybe they were too dry but did not improve after I watered. I replaced the light bulbs in the lights a week ago maybe, and keep them very close but I don't see any signs of leaf burn. I don't want to loose 50 seedlings and have to resort to big box plants or give away the extras like I usually do if they are infested. Thr 3rd pic the large leaves are blurry but it shows a good clear pic of the curled leaves in the background. The little tiny plants never got transplanted and are right next to the larger ones and look fine. If it were aphids wouldn't they go after the little ones too? I am just stumped at this point.

[IMG]2018 seedlings by Susan Albetski, on Flickr[/IMG]

2018 seedlings by Susan Albetski, on Flickr


2018 seedlings by Susan Albetski, on Flickr

2018 seedlings by Susan Albetski, on Flickr

I believe this is just dirt/potting mix:

2018 seedlings by Susan Albetski, on Flickr