Recently I received an email from a reader inquiring if backflushing is adequate to remove solids from the septic tank or if some type of mixing device should be used.This is another case where the answer depends on a number of factors, including how long it has been since the last clean-out, the degree of sludge and scum accumulation, and the makeup of the scum and sludge layers.When I started working in this industry, there was an interesting debate among pumpers about whether they could clean a septic tank through the 4-inch inspection pipes over the inlet and outlet baffles.
