Keith wrote:
I did the whole shootin' match about three times now.

In that case, it does sound like it's time to replace the plumbing. I'd
use Shields or Trident #148 white potable water/sanitation hose...not
too stiff, which makes it relatively easy to work with, and opaque,
which won't allow algae to join the mix of "critters" that like a damp
dark environment.

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

Scrubbed the tank,
flushed it out, filled with bleach solution and ran it through all the lines
and let sit about 6 hrs., then pumped the tanks out, filled with FW and
flushed the lines. The odor comes back within a week or so with the fresh
water. I'm guessing the black rubber hose maybe contaminated and
non-responsive to the bleach treatment. I guess I'll replace it and see if
that helps.