Well, I decided to let nature take its course, and I think this spawn is here for the duration! Here is the nest at 48 hrs:
The eggs (about 200) have already turned from a bright orange to a kind of brownish orange. Hopefully this means they are fertile. Mama and Papa seem much more diligent at protecting the nest this time around, and I never did figure out what ate the others.
On a side note, I have two 4gal containers of rotifers going, at about 30-50 rots/ml. Does that seem like enough, or should I try and start some more?
Thanks