"Blattus Slafaly" wrote in message
...
Chris wrote:
Steve Barker DLT wrote:
when they do mine, it's empty when they leave.

s

"pat" wrote in message
...
How much liquid should be left on the bottom of a septic tank after
being cleaned 1", 2" or more?




Odd, the fill mine with water after pumping the sludge out. The tank
could be damaged if left completely empty, I am told.

You were told a lie.

A light weight plastic or metal tank in a high water table area might want
to float if it is not weighed down with plenty of soil overburden or full of
water.