Join Date: Feb 2010
Location: Narragansett Bay
Thanked 230 Times in 215 Posts
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Re: calcium buildup in sanitation hoses
If you break enough calcium chunks off, it can clog, particularly where the hose meets a tank or fitting.
Don't ask how I know.
If they're calcified, I would leave them alone until you inevitably replace them.
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.