On Fri, 05 Dec 2003 15:35:39 +0000, Bruce Richards wrote:

I am looking for advise on the pros and cons of locating the waste holding tank
at an elevation slightly above the toilet (aproximately 16") verses the same or
lower elevation. A higher elevation would enable gravity flow to empty the
holding tank in legal waters but I am concerned about any problems it may create
in toilet function or other unforeseen issues. I would rather ask than create a
stink!

I'm not sure there's any great advantage to "gravity flow to empty the tank" -
there's much to be said for a macerating pump!

Also, there are many advantages to having both inlet and outlets on the TOP of
the tank (with a pipe going down to the bottom for the outlet), including little
or no sewage sitting in the hoses and stinking. With this setup, you would still
need a pump to empty it.

There's also the consideration that, if the tank is any decent size, it's pretty
heavy when full - better have that weight low!

Lloyd Sumpter
"Far Cove" Catalina 36 - just installed 135L tank last fall.