Re: help with a daydream?
Actually a very large pond would if heated in winter would moderate the temperatures pretty well I bet. Help keep the humidity high and maybe temps down a bit in summer. It could be done fairly cheap with a pond liner, (maybe even heavy plastic sheeting) avavilable from good aquarium stores and maybe a pool heater. Drums filled with water are used as passive solar heaters in greenhouses so in theory a pond would work as well or better.
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