Re: Composting Toilets vs. Holding Tank
Getting back to the original poster . . . we installed a Natures Head in our Catalina 27 before our two-month live aboard trip in the Bahamas.
Bottom line - it worked GREAT. A few bits of strangeness to get used to: guys gotta sit down to pee (hey, we are actually able to do this), remember to empty the pee bucket before it's 100% full.
Absolutely no smell on board.
We had to "change" to new peat moss after about a month and a half of full time aboard living (two adults).
This was a HUGE improvement over the messing around with vacuum extracting the tank, leaking pipes, plugged macerator pump, and the smell permeating the plumbing (after a few years).
They seem ridiculously expensive, but well built and solid. Good quality stainless fittings.
S/V "New Girl" on the dock