There is one other option that you can try if you have time. Get a fishing buddy that knows what redear look like, and go out and catch you some mature fish and transport them to your pond in aerated live wells. We make ours out of ice chests and hook up battery powered aerators. Just add a little ice to the water to cool down the fish so you can carry 20 - 30 in each ice chest. Lots of fun and I like to go fishing anyway. Just be sure to properly identify the fish. It isn't hard once you have put your hand on one.
