Septic TanksPolyethylene septic tanksPolyethylene septic tanks from Coon Manufacturing are produced using rotational molding technology to create seamless, one-piece units. They are resistant to chemicals and provide a long life expectancy. They are molded with ribs, and are available in 500-, 1,000- and 1,500-gallon sizes, with the two larger sizes available in one or two compartments. Optional manhole extensions and lid/riser combinations are available to accommodate different grades of landscape. 660/485-6299; www.coonmfginc.com.Concrete tank with anti-floatation collarConcrete septic tanks from Crest Precast have an anti-floatation collar cast into the tank base to prevent floatation of septic, pump and holding tanks in
