The greenhouse pictured above houses the main tank as well as the reservoir tank.  It significantly reduced both the evaporated heat loss and the convected heat loss from the tanks as well as raises the ambient temperature of the air surrounding the tanks by several degrees.

     The greenhouse dimensions are approximately 8 ft. wide X 10 ft. long X 8 ft. tall at the peak.  It is constructed of a cloth reinforced plastic skin over a tube metal frame.