I expected this to be as simple as putting the powder in water, place beside light and feed every now again. Was disappointed with these, myself and son payed great attention to these, followed instructions and also looked online to make sure we get the most out of our sea monkeys :) Nothing happened, saw a few tiny particles floating in the water, they didnt swim, get bigger or change colour despite constant TLC from my six year old.
overall it was a pretty expensive kit just to keep dirty water in.