Good video --- Most forum members have never seen fairly shrimp. What type of water habitat did you find the fairy shrimp??? I have only seen them in temporary usually woodland ponds.
Bill, I think that he probably found them in ephemeral pools as you have. The cysts usually need a drying period to be viable. They are temporary and live only a short time. They grow really fast however where they usually attain a high proportion of their maximum length in 6 to 14 days. Depending on the species the typical life span will range from 20 to 40 days (though for some species perhaps longer). So using something like this for a recreational pond would be a treatment where an optimum (unknown) weight of cysts would be hatched and seeded to the pond when the naupli are young. Species that mature in 7 days grow more than 3 fold each day provided there is sufficient food in the water. I figure the amount one wants to introduce is something along the lines of just enough to mostly clear a bloom by earliest adult maturity or no more than the fish could eat taking into account survival to the day of they begin producing cysts and their remaining life span. Cysts are the primary obstacle to using them, they are largely unavailable at prices that make sense for use in ponds for feeding fish.
They shorten the food chain considerably filtering microscopic foods and larger foods like zooplankton. Timing and goals for a fishery would be important. They compete directly against larval fish for food and their small size favors prey fish species. So they should be used with caution in ways that don't work against other goals.
Anyone who is interested in them can reach out to me about advice on growing them. A small cell only 40 sq ft would be enough to grow two one acre treatments with each cycle. I'll probably grow one cycle every year or two in the small cell I am planning.