Tiny tiny. The water will look red and sparkly, you'll see tiny red dots, but not a whole lot of detail. Usually fresh hatched fry can last about 48hrs, but after that it is best to get rid of it. Artemia naupli feed on microscopic algae and plankton, and that is even harder to culture than the shrimp itself!
When we cultured it in the lab, we did so in 5 gallon water cooler drums with a spickot. Open the spickot and you had your artemia without mess! Course you probably won't use 5 gallons of artemia in one day the way we did.
~~Colesea