Nice BG, this could become a fun project to work on with the kids, question on your open loop HVAC system, I have a customer that has a pond pretty much on top of a hill, very little natural runoff, he pretty much depends on the water from the ground source system to keep his pond full, but he has a bypass built into the system to where he can switch a valve in the spring and fall when the system doesn't run much and pump from the well directly into the pond to maintain the water level. I was wondering if your system has a bypass or might be able to add one and fill your pond back up to capacity that way.
