Formerly, a septic tank has been constructed with a prototype of cement and clay pipes made around 1860 by John Mouras of France. Today, a simple wastewater system normally has a capacity of one thousand to two million gallons — the normal tank provides with an inflow port of this http://andrewscott2.doodlekit.com/blog/entry/4730338/use-of-fake-rocks-and-bold-boulders-in-the-garden-area