You might also want to use a good holding tank enzyme. Peggy Hall recommends "KO", which is what we use (being on a lake, we have to always use the holding tank). It seems to work real well with minimizing the smell from the tank based bacteria. It's available at West or a variety of other places.
s/v "Pelican" Passport 40 #076- Finished Cruising - for the moment -
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"Don't dream your life, live your dream" - Bob Bitchin'
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