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Old 28-03-2013, 05:08   #1
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Join Date: Mar 2012
Posts: 20
Extra Holding Tank

Anybody ever added a extra holding tank, I mean by adding one hooked up to the one already on the boat ? I'm trying to stop using the weekly pumpout >
I have a 30 gal. now, have room for at least a 30 gal new

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Old 28-03-2013, 08:02   #2
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Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 2,264
Re: Extra Holding Tank

Might be worh investigating the treatment systems (names like Purasan, Lectrasan, etc.), if you're not in a No Discharge Zone (NDZ)?


Selby Bay, South River, Chesapeake Bay, USA.
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Old 28-03-2013, 08:11   #3
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Join Date: May 2009
Location: Panama
Boat: Steel trawler 63' Eileen Farrell
Posts: 960
Re: Extra Holding Tank

We have a 225 gallon tank directly under the head, pump out every three months or so out at sea. No Y valve, no smelly hoses, no hassle. I know you're about to tell me there is no room on your three stateroom four head sailboat for a tank that size, but we all know it's your choice.
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Old 28-03-2013, 08:54   #4
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Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50 in Narragansett Bay, RI
Posts: 1,532
Re: Extra Holding Tank

There's always a way to increase the size of a tank. Having multiple tanks necessitates multiplying the plumbing, vents, etc... Which adds unnecessarily to the inevitable problems.
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