I found this to be a great article on how to care for and grow brine shrimp. http://www.brineshrimpdirect.com/Bri...room-c176.html
They also sell Spirolina Powder
that can be fed to your shrimp.
It should be said that your brine shrimp are never more nutritious as when they first hatch and are still within their first 24-48 hours of life. The yolk sack that the shrimp live on is packed with good stuff that your fry will reap great benefit from. Most people keep two breeders running and use one a day to feed the fry. That way you have fresh young shrimp for your fry at all times.