Quote:
Originally Posted by mohead1
Theres the prob.....unless you want to be dumping the gray from the shower/bath/sink every other day or less to prevent overflow; you leave it open on long term stays. Its no different than your house. You have functioning traps to prevent gases from coming back and all tanks are vented to the outside anyway
You dont turn your house/apt sewer on and off do you???
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It is different from your home. Your drains at home go directly into the sewer not a holding tank first.
Just FYI for newbies, or anyone for that matter, that may be reading, you can leave grey tanks open if you wish, but NEVER EVER under any circumstances leave the black tank open, it's nothing like your house & you will have issues that are not pleasant to resolve.
If you don't put the sag in the drain hose it is possible for gases/fumes to enter the holding tanks & escape through the tank roof vents. As long as the P traps & Hepvo traps on all drains inside are working you should not get odors back inside the rv from the park system.