The temps we keep in a reef aquarium are not the ideal temps for rearing artemia. they are cold water loving creatures, many LFS sell them live in bags of water kept in the refrigerator. Although they will definately hatch in your aquarium, their discarded cyst shells will make an unnecessary mess. It is better to hatch them in a fishbowl, pump in air for 24-48hrs, shine a flashlight on the bottom after they hatch and they will swim towards the light where you can suck them out with airline tubing, then add to reef. Decapsulated BS have better nutritional value than encapsulated eggs (so the 'perts say) and it is wise to feed your BS ground up flake food or Dt's, to gut load them as much as possible before feeding to your reef inhabitants. I think many corals would like to have this supplement, its a good idea.
Brandon