Rolo1990

After my brine shrimp Hatch in my brain shrimp hatchery after about two days they die I’ve done about four batches and they won’t live past 2 to 3 days anybody have any suggestions. After they hatch I’m putting them in a 5 gallon aquarium that has been cycle and I have a couple crabs and snails living in it right now I bought the eggs from here and also the hatchery from here ???