Memphis
I have some first hand knowledge of the earth tube. As Stevehill has described mold and related issues.
On this particular installment albeit not with all the drain holes (that may get clogged with mold) the first season was awesome. The following years there was a foul stench emanating from the tube. The question. How can I repair this??? It was capped off.
I would caution against this installation. A humid warm climate would promote mold growth. Even with our -22 Deg. C. winter the air did warm on its way to the house and mold was not killed-off in those last few feet.
Don't mean to rain on your parade.
Randen
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