Originally Posted by dieselguy
VineU ... give us your steps on tank care ... there several thousand of us out here that just don't seem to have the technique down.
I built my own lance for black and an separately for grey, both have ball valves for local control. Lances were tested on the lawn to provide low volume high velocity jet stream. They will thrust like a jet engine and strike nearby surfaces very hard, just what's needed. Forgotten the orifice size where ideal, maybe 3/32-
The grey tank washer is similar but uses hose to snake down tank vac vent below bath tank in Georgetown.
Both jets must be lowered 1-2 inches at a time and rotate full circle. The key is concentrate in direction of sensors for good scrub.
Of course the level systems are indicators, not gauges i.e.:approx levels, still nice to know "almost empty or full".