On Tue, 08 Dec 2009 07:15:17 +0700, Bruce In Bangkok
wrote:

On Mon, 07 Dec 2009 13:37:17 -0500, Wayne.B
wrote:

On Mon, 07 Dec 2009 09:37:30 -0800, Gordon wrote:

This filter supposedly stops odor so why not vent inside?

It will lead to problems sooner or later. Peggie is a big advocate
of freely venting the holding tank with lots of fresh air. At the
very least, the filter will impede that venting. At worst the filter
will become clogged sooner or later and cause the tank to pressurize.
Use your imagination on where that will lead.

Perhaps I miss-remember Peggy's advice but I have the distinct memory
that Peggy suggested large holding tank vents and felt that a supply
of oxygen was necessary - I seem to remember 1 inch vents?. I can't
see that adding a charcoal filter to the system is going to cause
troubles assuming that it doesn't impede air flow but why vent inside
the boat - what advantage is that going to give you?

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)

He'll know right away when the filter doesn't catch everything.