Join Date: Feb 2010
Location: Narragansett Bay
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Re: cleaning out water tanks
Pump diaphragms are a wear item. If you used diluted chlorine and didn't let it stand too long, I would not expect that to cause undue wear.
Not knowing how much stuff is growing in there, nor how it was maintained in the past, I would try to manual wash them out the first time. Do you have an access plate? If I was going to live aboard, I would seriously consider replacing the water hoses too. Not that expensive and they all eventually split anyway.
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.