claus wrote:


I have a follow up comment/question - the tank's 3/4" vent hose on our boat
goes from the top of of the holding tank through the side of the boat above
the deck. It terminates in a small chrome "mushroom" with two small holes. I
cannot figure out how to get a good backflush going through the small
openings... is there some kind of tool or adapter available for this purpose
or what am I missing???

If it were my boat, I'd replace the thru-hull with an open bulkhead
fitting and--if heeling puts it under water--clamshell over it.

After emptying, rinsing etc. of the tank and applying a dose of Oderlos
(what a bizarre moniker, unless you are norwegian)...

Odorlos IS a Norwegian import.

...the odor is gone - hope
it lasts until the next pump-out!

If you expect to without adding more, you didn't read ALL the
directions....'cuz it won't. Odorlos isn't a live bacteria product that
contines to renew itself by multiplying...the active ingredient in it is
nitrates, which exhaust themselves in about a week, So to keep it
working, more must be added. It's especially important after the boat
sits for several days--even if you pumped out and added it last thing
before leaving the boat, that you add again with the first flush when
you come aboard.



--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://shop.sailboatowners.com/boat_odors/