Here is a quote from an add....link is below also....I need to find some to try, right now I'm using Phyto, Zoo and Marine Snow....
These eggs are 40 to 50 microns in size. There are about 3,000,000 eggs per ml. Just one 1ml (1/5 tsp) will feed a heavily populated 50-75 gallon tank. Great for SPS coral polyps, especially acroporas. The eggs contain lots of Omega-3 fatty acids, EPA and DHA essential to your coral’s health. This is an excellent zooplankton substitute.
http://www.marinedepot.com/md_viewIt...product=DT1311