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

I strongly suspect (disclaimer: it's been forty years since I took Heat Transfer class) that the fact that water would circulate through the coils of an open loop in a pond (which would occur due to natural convection from the resulting temperature difference) means that temperature transfer loops in water would be more efficient than ones in clay that was pretty much the same starting temperature.