We had a Wanderer 5th Wheel, and we always left the tanks closed. Now we have a 1996 or 94 -- I forget --- Travel Supreme TT, and right in it's book it says to leave them open. The black tank has a built in flusher, like a Flush King, that we use 1x a week, or so. No problems. My husband is going out of town for 3 weeks, and I am liking that the tanks will be open, not closed. Less for me to worry about, I think.
Seems to me my owners guide for my toilet in the camper tells me to leave the blackwater tank closed until 3/4 full, then dump, close valve, add water to toilet and deoderizer before using again. The TP teepee is a result of leaving the blackwater tank open, and it hardens as the water/urine leaves the tank.
Kimdorth, I would hope that was an error on the part of the manual. But you do what you want...good luck
Dianne
Donnelly, ID
DataStorm
HAM WB6N (Terry)
2005 Teton 39' Frontier Grand
2003 Freightliner FL60
Life Member Good Sam
Escapees
Geocache..."RVcachers" RV net Blog
have never left the black tank valve open.. Water drains and solids get more
solid. Bad advice if you've been told to leave your black tanks valve open.
JMHO!
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