[MarkoPolo]

Thanks for the "woosh" comments.
Does this happen when you pull the handle below the toilet or when you open the one for the black water?
I do have a flat 15 gallon tote that is to fit under a pop up. Very cumbersome and hard to carry. I was hoping for something just big enough to hold the Thetford contents, hence the 7 gallon container. Seems like the smallest tote is 10 gallons.
I also wanted to get away from using the larger 3" slinky hose, but it sounds like using a small hose will cause Thetford "constipation".
Thanks again for sharing your wisdom.
Mark