Hi Bryan, Congratulations on your success! What made you start with the hybrid? I'm sorry I don't have a rotifer culture to offer but I've been in the exact same spot (twice) and managed to find a workable solution that I'll share if you're interested. Good luck with your nest, either way.

fwiw, I think this event would win the Aquaculture contest, assuming you jump through the hoops. (breeding journal, etc.)