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Select a kit that contains at least the Triops eggs, food, and care instructions. You can also find kits that come with a tank, thermometer, or dish for hatching the eggs. Most kits cost between $10 and $20. Out of these 20 eggs, you'll likely only get 1 to 3 Triops. Make sure that the eggs, which are as small as a grain of sand, go into the water and don't accidentally blow away or get stuck on the edge of the aquarium. Most kits come with around 40 to 60 eggs, so you can have 2 to 3 hatching cycles. After you sprinkle the eggs into the water, expect them to hatch between 24 and 96 hours later. Look closely, as newborn Triops are so small, they're almost invisible to the human eye for the first few days. If you're hatching the eggs in the fall or winter when it's colder, it can take an additional 3 to 5 days for the Triops to hatch.
Buy a Triops kit from a pet store or online retailer. Sprinkle about 20 eggs into the tank. Wait 1 to 4 days for the eggs to hatch.