Summer kill was due to lack of oxygen, partially caused by introducing alfalfa to help clear the water. I will be installing an aeration system before stocking.

Second kill is caused by lack of water. Worst drought in over 25 years. Can't do much about that one...

Once the pond refills I plan to take my chance and restock, may never see this kind of drought again for as long as I live here. Can't afford to dig it out, already at the water table, or drill a well to supply it.