Pond Boss Forums INTRO Questions & Observations Burying Groundsource heat pump beneath pond?

About 15 years ago when I was researching geothermal I was told that during a prolonged winter the efficiency of a closed loop system would drop if it were installed in soil due to drawing heat from the soil and cooling the area right around the coils. It's a toss-up here between open loop dumping 5-6 gpm into a pond and closed loop systems that have the loops in the pond.

If the ponds ice over, the bottom water in a pond is typically 39-42 degrees..... Here the open loop systems need to be "flushed" once a year due to mineral and iron build-up.