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Old 08-06-2010, 05:01 AM   #5
Keith's Avatar
Vessel Name: Anastasia III
Vessel Model: Krogen 42
Join Date: Oct 2007
Posts: 2,716
RE: cleaning out freshwater system

I shock with 1 gallon of* bleach per 100 gallons of water. Add the bleach, then fill the tank completely. Run it through all the cold water faucets (I don't like it to mix in the hot water heater because it takes forever to flush out). Remove the screens from all the faucets so they won't trap the crud that comes out. I let that sit from 4-12 hours. I have large FW tanks, so I pump those out with a 110V puppy pump, then fill with fresh water and flush the lines out. Repeat that once and you're good. Oh yea, don't forget your fill hose if you're hooked to shore water. When I'm flushing the lines with the chlorine solution, I hook up my shore water hose to an outlet and fill it with the bleach water too.

Bleach won't react with most plastics and only slightly with SS, but not enough at this strength and time to do any harm.
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