The best method is to use marine salt mixed up to normal specs or a little higher in salinity 30-35 ppt (1.022 - 1.026). pH of 8 to 9 is fine. They only live for about five hours in fresh water. Use as much air as it takes to keep the water well aerated, and to keep the cysts (eggs) in suspension. Air stones are optional. Lighting requirements are not great, a simple 12 watt twist buld preferably in a daylight spectrum is best. A bottom drain on the hatching container works best as it makes it easiest to seperate the hatched cysts, brine shrimp and unhatched shrimp cysts easier. With the air turned off, the empty cysts will be on top, there will then be an open space and then the freshly hatched shrimp, then another open space and then the unhatched cysts which will be settled to the bottom. A "V" bottom or round bottonm, in that order, are the preferred shape of hatching containers. They usually begin hatching within 18 to 24 hours and are through hatching within 36 to 48 hours.