Ryan,
your note about the trench is pretty much the first thing that popped into my little brain when I started considering possible advantages of doing this before water retention. So, there is a trench that is below frost line (perhaps well below) that the lines run in from the pond to the home foundation...? Are there basically 2 lines (supply & return), or are there multiple loops. I read somewhere in the near past that it is normal to set up multiple loops in case one fails. In fact, I believe it related to a soil burial project and the extra loops were not even employed....cheap insurance in case one fails. Regarding the loop grid, can you paint a picture of the layout and spacing of the 900 linear feet? I have to imagine that alot of the piping was very close to a neighboring line. Was any of it left in a "factory coil", or was it all stretched out? Oh yeah, just a little more....how big is the temp controlled area and how many ton unit? What brand?
thx
