We are getting ready to take our Fifth Wheel on our first trip. I have a water inlet that says this on it: CAUTION SEWER TANK FLUSHER Sewer tank valves must be OPEN when using this inlet. OK...
I do pretty much the same as others. I hook up flush hose then turn it on, open drain valve. When tank is near empty I close valve and wait about 1 to 2 mins then open valve again. I repeat unti I am happy with nothing coming out but clear water. Then I unhook hose close valve add stuff to tank with 2 buckets of water.