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Old 09-29-2021, 02:44 AM   #4 (permalink)
freebeard
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The house my parents built had a slanted box ('triangular') with a 60-80 gallon black painted water tank in it, in the top of a greenhouse addition roof gable. But the so-called 'solar contractor' put it two feet from the exterior glazing and that cut down the already marginal light capture, due to internal shading.
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