MMC wrote:
I saw hose that looked
suspiciously like marine sanitation hose in my neighborhood hardware store
the other day and when I asked the salesman about it he said it was hot tub
hose. Don't remember the actual price, but it was enough of a difference to
convince me to try it next time.

You'll be sorry. Not all white flexible pvc hose is created equal...and
hot tub hose is not rated for sanitation system use, only for water use.
It'll permeate with odor very quickly.

I've also found tygon (sp?) tubing with the colored reinforcements and all
at a farm supply for alot less than boat store people sell it for.

That may be ok, but if it'll be connected to any below-waterline
thru-hulls, make sure it's a grade that's rated for below-waterline use.

Flex hoses are like hard PVC in that they have "schedule" #s...schedule
148, 144 and 101 are rated for sanitation use...I'm not sure what the
"schedules" are for clear hose, but they also use a standardized system
that will tell you which hoses are rated for below waterline use and
which ones aren't.
--
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