Ron3rd wrote:
You can pick up a Flush King or the Camco clone of the Flush King at Wang Mart and do a reverse flush. Works great.
ON EDIT: I see you already discovered the Flush King. Great device, I use mine quite often.
While the Flush King comes with a back flow preventer, it doesn't come with an anti-siphon valve like the
RV Hydro Flush models that have both the back flow preventer and the Anti-siphon valve. Why only the back flow preventer???
BTW, with the sewage and flush water, I emptied 25 gallons out of the black water tank. Quite a bit was not emptying out. Glad it's all out now and clean.