Thanks, Kris.
I have not tried any meds, since no one seems to have any idea what might be wrong. I've been feeding mysis, cyclopeeze, and formula-1. They ate it all before this. This morning the little one (the first to get sick) went after finely chopped up formula-1, and would mouth it, but I don't think it ate any. No interest in the cyclopeeze, which was their previous favorite.
So all in all, it looks like they may be recovering.
-Darrell