Jeff wrote:
Perhaps I'm wrong, but I don't think a 27 gallon holding tank will
handle two weeks output for two people.

It depends on whether they're continuously aboard or away during the
weekdays at work. If they're continuously aboard, a 27 gal tank will
fill up in 5-days on average. Here's how to calculate it, regardless of
which toilet, manual or electric: Average flush including flush water
is about 1/2 gal...the average adult uses the toilet 5x day...so avg
output/person/day including flush water is 2.5 gal...x the number of
people. Divide the tank capacity by that number. In this case, 2 people
= 5 gal/day...27 gal tank capacity divided by 5 = 5.6 days to fill up
the tank.

If they're away from the boat during working hours, they can prob'ly get
at least another 3 days out of the tank...but that's still a bit shy of
two weeks unless he uses the lee rail a LOT!

Which, unless he's in waters where he can't use one, makes installing
Lectra/San look better all the time.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/store/custo...0&cat=6&page=1