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pmesmer 01-25-2008 11:29 AM

holding tank replacement
We have a 10 gal holding tank and want to go larger. Has anyone ever done that? And our 32 Irwin is a 1988. I guess it is time to replace the hoses to the head? Seems like a big job but I bet it would help with odors. We use fresh water to flush and that seems to help. Any suggestions appreciated. :)

Driver 01-25-2008 11:58 AM

Holding Tank Replacement
On our previous boat, which was a 32' Kirie, we pulled the old 6.5 gallon (!) tank out and replaced it with a new Todd holding tank which was around 30 gallons. It sounds huge but with 5 people on board quite often in a no-discharge zone it was nice! Had to built a new platform and glassed it in to the lazarette which was directly behind our head. Replaced all the hoses too. If you're replacing the tank - might as well start with fresh hoses! Good luck.

Freesail99 01-25-2008 11:58 AM

The odors may be coming from old sanitation hose rather then the tank. If you have room to put a bigger tank, measure the area and go to

See how close you can come to the size tanks they offer.

PBzeer 01-25-2008 12:08 PM

Two things to keep in mind are weight distribution and length of hose run.

Driver 01-25-2008 12:12 PM

Holding tank
Good point about the weight distribution. Fortunately, our fuel and water tanks were on the opposite side and balanced well.

pmesmer 01-25-2008 12:23 PM

larger holding tank
Just as we suspected. New hoses, a larger tank, and fiberglass a platform. These are on the "to do" list. I would love to have a 30 gal holding tank.
We want a windlass in the bow so that may help with weight distribution.
Thank you every one for your input. This is a great group! :)

chucklesR 01-25-2008 12:56 PM

Check out some of the composting heads, AirHead comes to mind - simplest way to replace a holding tank is to not have a holding tank - or the smells associated with it.

sailingdog 01-25-2008 02:27 PM

A larger tank won't help with odors generally. Better ventilation of the existing tank is probably easier and more effective. BTW, wrap a cotton towel that's been soaked in near-boiling water around the hoses on your head.... then after it cools to the touch...take the towel off and sniff it...if it smells like sh!t, then your hoses need replacing, since they're permeated and they're probably the cause of the smell.

cardiacpaul 01-25-2008 03:09 PM

"BTW, wrap a cotton towel that's been soaked in near-boiling water around the hoses on your head.... "

Hey dog, I tried that and damn near burnt my ears off. thanks for nuttin'. :)

sailingdog 01-25-2008 03:17 PM


LOL....I forgot...most of us don't have hoses coming out of our skulls.. :)

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