[Steve C.S.]

I just met with a guy about putting geothermal units at the park I work at. He said they use a very heavy water hose type material. PVC expands and contracts too much to be safe (his words, not mine). I asked him about the geothermal principle and fish tanks. He said use very small diam. tube and slow water movement. He also recomended a very large sump that could hold several hundred feet of coil to get the most out of the heating and cooling. We have about 400gal of tanks in our nature center and thats what got us talking. The man said if done right it would save a great deal in electric costs.