Wayne.B wrote:
They have decent sized heads but not enormous. They also have a good
sized holding tank in the 200 gallon range if my memory is correct.
The choice between fresh water and sea water is not all that important
to me but all other things being equal, I'd probably pick salt water.

In that case, I recommend the Raritan SeaEra--very basic, exceptionally
durable and trouble-free macerating electric toilet. It's available in
both raw water and pressurized flush water versions. Pressurized flush
water is simpler...no intake pump, which means no impellers to fail
because someone forgot to open the seacock. Also eliminates odor from
stagnant sea water trapped in the head intake AND sea water cacium
carbonate buildup in the hoses.

In the interest of simplicity and reliability, I'd probably not choose
a treatment device. My first priorities are reliability, and ease of
maintenance if something does go wrong.

IMO, you have it backwards...a Lectra/San requires far LESS maintenance
than a holding tank--no vents to keep clear, no need for any odor
elimination management...no sludge buildup...no macerator pump with an
impeller that can fail at sea when the tank is full because you either
haven't changed it in 5 years or forgot to turn it off as soon as the
tank was empty. The only maintenance a Lectra/San needs to keep running
reliably for about 20 years is a solution of muriatic acid according to
directions once or twice a year.

--
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/html/get_ri...oat_odors.html