Hello! I have sea monkeys and I know TONS about them! What you do is you feed them once a week. Be VERY careful not to overfeed becuase it can suck up the oxygen in the cage. You must give them air every day ( i reccomend buying the million air bubble pump) if you dont have that use a staw and poke holes at the bottom and blow in it a couple times a day. If you have any other questions feel free to email me at [email protected]