Has anyone ever tried Rid-X in your holding tank to help clean the sensors and tanks? Seems like a much cheaper way to get rid of the grime in the tank. Thanks for your advise.
I tried a lot of of things. Here is what worked for me.
I dumped in some TSP, soap and a black tank chem. Then poured in about 20 gallons of hot water that I hauled form the house. That didn't make any difference, so then I filled the tank right to the top and let it sit for a week.
When I drained it read empty. For the first time in years.