Thanks JHAP! You'll probably see me around here alot. Going to need some advice on the pond too! Hoping to start in a few weeks. It's stream feed, so don't think it will be in danger of going dry with the geothermal. Also going to install a dry hydrant. Any forums here on that?? The cabin will be a good way from the road and the hydrant will also be a plus for insurance. Sounds like this is going to be a working pond!It will heat/cool, supply hot water, put out a fire, provide fish and hours of enjoyment. Anything I'm missing?