ive grown artemia for years to feed to fry.
ive grown them to adult but its alot of work for basically no nutritional value.
newly hatched artemia is high in protein and its small enough for newly hatched fry to eat as a first food, useless as an adult fish food, they are really small.
baby brine dies as soon as the yolk sack is used up and wont survive in your tank and in sufficiant amouts will foul your water.
they are simple to hatch, theres a million sites explaining it.
you basically need a small air pump 2 feet of tubing some rock salt/aquarium salt, not instant ocean type and a 2 litre pepsi bottle a warm room and a lightbulb. they hatch in 24 hours or less depending on temp, and lose their nutritional value fast, 2 days or less.
