Hi, buying my first home and it comes with a project of finishing 40x100ft pond that's 30ft deep in the middle.
Before finishing it I'm wondering about installing some geothermal hosing before laying the clay on one side of the pond. All the pond based systems I've seen professionals will sink the system but that must be some sort of swimming hazard? Also wouldn't being under the clay make it more efficient and like a horizontal GSHP than laying it in a body of water?

Thanks for any explanations and advice you have.