Originally Posted by LakeMi
With the size of boats I'm looking at the holding tanks are small. So I'm thinking at most every other time to the boat ill be making a trip to get it pumped out. 15 gal sounds like a lot but it adds up fast with 5. Still better then a portipotty.
5 people on 15 gallons of holding is barely a day, in my experience. To keep waste hoses from smelling, you need to flush at least one gallon of clear water, after
you empty the bowl of its contents. That will mean a dozen flushes max. Better not drink or eat anything.