They're fine. -sigh- The weirdest part is there was no breeding (thank goodness), nor was there any fighting. The four girls that are left are far more cranky now, though.
You use cultures as a beginning food for the babies. After reading a ton and comparing techniques, it seems that this is the feeding order for babies once free swimming:
Infusoria followed by worm cultures, and then BBS last.
If we are made of cells, then a scientist who studies cells is actually a group of cells studying themcells!