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JWWPHOTO's avatar
JWWPHOTO
Explorer
Jul 11, 2013

Grey Water Tank is draining really slow now....

I am sure that grease is the culprit. The tank drains into a 1-1/2" pipe before meeting up with the three inch drain from black tank. I attached one of these backflush adapters and blocked off the ...
_40Fan's avatar
_40Fan
Explorer
Jul 12, 2013
Cap the roof vent and all gray sink drains, but one. Then use the blower side of a vacuum and push a little air down the one drain that you didn't block off while the gray water tank valve is open. Fill the tank to half full before hand.

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