After 4.5 wks,
Aquarium #1: 1 adult and 5+ nauplius.
Aquarium #2: 1 adult and 5+ nauplius.
Aquarium #3: 6 adults.
After 4.5 wks: the number of adult Sea-Monkeys varied a lot between the three aquariums. Initially, the two aquariums on the left only had one lonely adult Sea-Monkey each, while the third aquarium had 6 adult Sea-Monkeys. However, there were hatchlings or nauplius after week 1 that were easy to miss by seeing. These nauplii grew into adults in week 5. So, when raising Sea-Monkeys and seeing no or only one Sea-monkey hatch, it is important not to give up on more sea-monkeys coming visible in weeks 4 and 5.