Steve Lusardi wrote:
Peggie,
Won't the hydrochloric acid eat the porcelain bowl?

Nope. Won't eat rubber either. In fact, owners and pros have used it for
decades to clean sea water minerals out of raw water intake hoses and
raw water engine cooling systems. The instructions for
cleaning/descaling) the Lectra/San electrode pack also call for a 12%
solution of muriatic (hydochloric) acid, flushed into the unit through
the toilet.

PS Just received all the stainless pipe fittings and flanges for the
plumbing yesterday from Texas yesterday.

SS fittings in the sanitation system plumbing??? Not a good choice,
'cuz urine will corrode 'em. At least one trawler mfr who puts all
fittings on the top of the tank, with a pickup tube inside the tank on
the discharge (a great idea) used stainless fittings and pickup tubes--a
VERY bad idea, 'cuz the tubes are corroding, even falling off in pieces
inside the tank, in just a few years.

--
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://shop.sailboatowners.com/boat_odors/