How well do you think the flexible, corrugated, black plastic septic-system
pipe would work?
It's fairly thin-walled, so the heat transfer would be fairly good I would
think, and by being flexible, you could bury a bunch of coils, reducing the
amount of property that would have to be dug up.
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Ray Barkalow - First Rays Orchids -
www.firstrays.com
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