Forum Discussion
wayward1
Mar 08, 2013Explorer
When parked long term, I only let the grey tank run free. The black is held (valve closed) and deodorant is used in the tank. When I get a couple days worth I run water from the shower down the toilet to get some water with the "stuff" to help flush it out. If your hooked up with the black tank valve open all the time the liquid out runs the solids and leaves the solid behind. After a couple weeks you have a poop/paper dam that the liquid flows over other wise known as a clog.
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