Grey Tank Valve Open or Close
When you spend 1 to 5 months in a park, do you leave grey valve open or close. When close have to empty often. Does it damage anything to leave open except when you want it full to dump with black t...
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I have had sewer flies when I had a dip in the hose. I suspect they fly down the vent pipe. I have had them once in the black tank and it is closed except for the two minutes or so it takes to dump it.
