[Home » FL Septic, Inc. for over 60 years, florida septic inc. has manufactured the best commercial concrete precast 300 – 5000 gallon tanks. we deliver everywhere florida! our precast concrete tanks are used for septic, grease interceptors, oil/water interceptors, and storm water.florida septic, inc. also offers models approved for h20 loading, aquaklear aerobic treatment, biomicrobics fast aerobic treatment, and interceptors that comply with section 1003.5 of the florida plumbing code.enjoy the assurance of quality a]