I am working on some carrying capacity information for your pond. Is it as originally posted as 0.25 acre or 0.5 ac as you noted above in this thread.
Bill, that is really great to know. (Just fyi: the pond is 0.5 acre, not 0.2.) I've been feeding exactly that: ~1.5 cups/day.
Also did you install a liner in the pond as considered and discussed or did you use the natural compacted clay bottom for it to hold water?