We recently adopted 2 drakes. We need some girls for them. We plan on having 6 ducks total. We have 2 acres and have a wet area with cattails and phragmites that our sump pump runs into (which is the real reason we r digging a pond). It’s approx 50’x10’ May be 18” deep in the middle when full but runs off along the drainage for the crops behind our property. We have a high water table here and the sump pump runs year round and frequently. We have a temporary stream running along the side of the yard when snow melts or it rains (just so u get an idea of how much water we get). I need to figure out how big of a pond I can have dug for 6 ducks. Any advise?