Two vent pipes on 23 MBH, which one?
I just purchased one of those siphon vent covers to help remove black tank odor and noticed I have two vent stacks on my 23 MBH. Which one is the black tank vent? I assume the one closest to the bathr...
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One vent will be for the black tank, the other for the grey tank. The vent for the grey tank may be nearer your kitchen sink, but it's still the vent for the grey. If you have 3 tanks (1 for galley - kitchen, one for black, and one for grey, you should have 3 vents.
