When keeping brine shrimp (after hatching) How much salt per liter of water should you use in there tank?

I can find loads of information on the Internet about how much salt to use when hatching brine shrimp eggs but no info at all about how much salt to use per liter when growing them to adulthood, I want to keep them to feed my larger fish so i need to know how much salt to use in there growing tank? Thanks, Katie.