10-26-2014, 11:44 PM
I'm not 100% sure what you are saying but I think it is that you smell sewage from your boat. Assuming that there is not a leak anywhere and that you have a Vacuflush system that uses fresh water, my experience is that it is best not to use any chemicals. I have had great luck with the Sealand vent line filters. They are kind of pricey (around $80 each) but are easy to install and one per season worked for me.


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