How did you acclimate them to the pond? It sounds like they have only been in there for about two weeks. I wonder if maybe there could be a difference in the water between the pond and their old tank, and it could possibly be causing molting issues? I’m not sure, but I’m sorry you’re losing shrimp!
Would you happen to know how old the shrimp you bought were? Because that looks like one of the oldest ones that’s in my brothers tank, and that shrimp is almost 2 years old.
ConsciousCapital69 
How did you acclimate them to the pond? It sounds like they have only been in there for about two weeks. I wonder if maybe there could be a difference in the water between the pond and their old tank, and it could possibly be causing molting issues? I’m not sure, but I’m sorry you’re losing shrimp!
Would you happen to know how old the shrimp you bought were? Because that looks like one of the oldest ones that’s in my brothers tank, and that shrimp is almost 2 years old.