I have only hatched brine shrimp a couple of times and thought it was fascinating how long the eggs could remain dry and seemingly dead only to be hatched in like 24hr. The one thing I didn't do was grow them out...aparently they grow to a fairly substantial size...big enough to feed larger fish....If you do this be sure to have masking panels to block the light from all but the top inch of the tank or bottle. Shine a light at the surface, from a side angle, and the newly hatched nauplii will be attracted towards the light and concentrate their numbers in the brightest area of the vessel. This makes them a bit easier to observe.