Quote:
Originally Posted by Judge
We typically add the Calgon and Dawn to about 5 gallons of water when we are pulling out of a site so it sloshes around the tank while driving. I don't think it will hurt the Thetford treatment but not 100% sure. We have not had odor or blockage issues with our approach.
The San-T-Flush is good in theory but with too many variables on where they place it in the tank, camp water pressure, etc. I have found it is most effective ads an easy way to fill the black tank with water to flush out remaining waist.
|
I have done some more research
I don't think that I was clogged at all anymore. Here is my new theory. Attached is diagram of my plumbing. It ties to what you were saying earlier about the toilet being on the passenger side. Based on a assumptive level dump site; the drainage is in favor of the gray tank as drain is on bottom, but black tank flows through the side of waste tank. The flange of the drain pipe on the wall would cause some depth above the floor of black waste tank. I think I had drained properly and all was good with no issues and no clog. Then when I drove for 15 min to go home, the black wastewater sloushed the 2-3 gallons that were below the drain line or not level to drain out. It overflowed to the sewer cap where it was caught. I never noticed before because the black tank valve has always closed and caught it.
I bet if were to raise both rear tires 1 or 2 inches it would all have drained out.
Thor Forums
