Which vent pipe is the Black Tank?
Greetings. We would like to install a Cyclone RV Holding Tank Vent on the black tank to hopefully reduce black tank odors. The problem is on our roof, the black tank and the grey tank vents are id...
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In my case, I found that the source of odor was not the black tank. It was the gray tank. I put the vane on my gray tank and took care of odors while driving.
