https://hakaimagazine.com/features/s...t-newtab-en-us

excerpt
Both the state Department of Natural Resources and the Artemia co-op’s own scientists have reached a consensus that the fishery is healthiest if a minimum of 21 cysts per liter are present. Any less and the fishery gets shut down. That’s why Van Leeuwen and his crew are out on the lake this warm November day—making sure it’s neither overfished nor under fished: that sweet spot of 21 cysts per liter results in the optimal amount of hatching in the spring to come. So far, this stringent management pattern has maximized the Artemia population.
Its an interesting article about something important to our hobby and fisheries in general.