Staining doesn't impact the water quality, so I wouldn't worry about it
in the tank. A filter in the fill line will help to keep the sediment
out of the tank--just clean/replace it often. Flush it out of the tank
at least annually...recommission the system as previously posted
annually or when the water starts to taste/smell funky, whichever comes
first.

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

Ilv2sl wrote:
The poly water tanks in our boat, get a redish color staining and sediment in
them. We use well water from the marina, and it has a lot of iron in it. In the
marina showers that get the staining we use oxalic acid in hot water, sprayed
on the shower enclosures, and it cleans it off almost instantlly. It doesn't
work very good with cold water.

I'm looking for something to put in the tanks to clean them, and more
importantlly, the lines. We scrub the tanks on a regular basis, but this
doesn't do much for the lines.

Any ideas? Thanks