Hello Larry, sorry to hear about the baby. I keep hoping that things will stable out. I'm trying to remember all of your posts and your set up there with the horses. I did a little surfing and from what I can tell the #1 cause of infant mortality is parasites because the babies are stationary and very vunerable for the first 14-17 days. I also saw where gas bubbles can get trapped inside of them and cause the bends.
Leslee Matsushige, assistant aquarium curator at UC San Diego's Birch Aquarium at Scripps Institution of Oceanography has done specific research on sea horses and jellyfish with amazing findings and positive results. I'm wondering if a person could contact her and see if she would be willing to point you towards any of her research papers and publications. I'm sure they are full of very valuable information. It's just a thought. I know you probably have cases of books and papers, I just wanted to try to help, because I know you are trying so hard.
Here is the site that I found an article on her.
University of California - UC Newsroom | Aquarium curator doesn't horse around