Construction requires skills and tools available in any large steel fabrication shop. Water pumped from deep wells rarely contains enough oxygen to support growth or even survival of fish. Consequently, groundwater must be aerated before it can be used in aquaculture systems. During spring rains, oxygen is higher than at other times of the year.
Lines are least-squares regression fits to the data.
All fittings were welded in place before the bottom was welded to the tower. This price included painting and delivery to the site from a steel fabricator in Marion, Alabama. The lower arm of the sanitary tee was bushed down to 3 in and served as the overflow drain. During normal operation, the flow of water into the tower was just slightly greater than the flow required from the bottom of the tower. A small excess flow, discharged from the top of the tower, ensured a constant head of pressure throughout the system.