Monel water tank

WC1966

Lieutenant Commander
Joined
Oct 23, 2011
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Groton CT / Vero Beach FL
Boat Make
Webbers Cove 34
Morning,
I have a Monel water tank, only used it for washing hands ect..
Before I add bleach or some other home remedy, in an attempt to clean the tank is there anything I need to know? Science projects and chemical reactions are long forgotten.
Thanks in advance
 

F/V First Team

Admiral
Joined
Jan 10, 2012
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Narnia
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www.otisenterprisesmarine.com
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Northern Bay 36 - Modified
"In an effort to make the tank usable, I cut a large clean-out hole in the top and thoroughly cleaned the tank and filled it with a mixture of G cup of bleach for every gallon in an attempt to "purify" it. (Editor's note: Don't exceed a teaspoon per gallon to purify.) My efforts proved to be a big mistake. The tank was clean, and the water ran clear thereafter, but it never lost the taste and smell of chlorine no matter how many times I flushed the tank with fresh water. The fiberglass had absorbed the chlorine and would not let go of the scent. Subsequently, I learned that a solution of one quart of white vinegar added to every five gallons of water in the tank and allowed to agitate for several days, then drained and flushed will remove the chlorine taste and smell."

Excerpt from Good Old Boat - Tanks: Easy to forget, too important to dismiss article


On the chemical compatibility sheet Monel got a D for chlorinated water and a B for vinegar

http://www.fnwvalve.com/FNWValve/assets/images/PDFs/FNW/FNW_ChemicalCompat.pdf
 
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