After experimenting with a dozen different designs I have developed an inexpensive yet structurally sound system. This involves the use of fiberglass, epoxy resins, and wood; using the right epoxy formulas are crucial to structural and chemical integrity. I design my systems using 1″ fittings and special redundancies for indefinite operation; next to no upkeep as the system runs like a nuclear reactor for years providing food.
The importance of basic engineering concepts come into play during this stage. I decided to reinforce the sides of the tanks with a “belt” made from epoxy reinforced 2x stock. After assembly the belt was hammer-drilled with 3/4″ lag bolts, tightening the belt around the sides.
After going through a 130 degree F heat cure and a post cure the units are ready for employment.