I currently have an open loop 3 ton running off of a shared domestic well. Static water level is about 25 ft or so down and I have a submerged pump (unsure of power). I am planning on lowering the submerged pump pressure to 20/40 or lower and upgrading the tank to an 85gallon then running a separate 1/2 hp jet pump off of that to a 12 gallon tank for domestic use. I'm thinking that this should allow the submerged pump longer/less frequent runtimes and also save pumping energy by lowering the pressure of the water put through the geo. Anyone familiar with this type of setup? I'm not finding too much info on it but it seems like it would be a sensible way to go. Only downside, I think, is more complicated than one pump/tank?