So now I think I have an issue I need help with. At the lake this weekend and drained both galley and bathroom gray water tanks last night. This morning my daughter took a shower and told me the tank ...
May have sucked a partial vacuum because the vent is clogged. Try to drain again and then run a hose down the roof vent while valve is open and if water runs out at about the same volume going down the vent then the vent is OK Good Luck, Mike
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