How big a holding tank vs. camping - Page 2 - SailNet Community
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post #11 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

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Caberg, I'm not sure the WagBags are for me, but I'm curious wher eyou get them. All I see is a link to the DOD Mall and the GSA Advantage site. I'm not in the government, so I can't order from either of those.
Widely available online, couple of links below. If you think about it, the gross factor of sealing a bag of your own waste is way less (or should be) than dealing with hoses and tanks filled with a group of people's waste that sits for days or weeks at a time. But, gross factor aside, we mainly do it because of the efficiency and ease of not having to maintain and empty the marine system/tank.

Cleanwaste WAG BAG Waste Bags - Package of 12 at REI.com

Amazon.com: Cleanwaste WAG Portable Toilet Bags: Sports & Outdoors Amazon.com: Cleanwaste WAG Portable Toilet Bags: Sports & Outdoors



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post #12 of 115 Old 01-15-2014 Thread Starter
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Re: How big a holding tank vs. camping

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Since that makes for a stinky boat we have a different rule. If you are a boy and aren't in a marina then you pee over the side (legal, even though bucket and chuck it is not).

A 20 gallon tank lasts 5-7 days of cruising for us, a sample size of one couple.
So call it 20 gallons for 2 people for 6 days = 1.666 gallons/person/day, utilizing the male-over-the-rail conservation technique. This seems in line with CruisingDad's 2 gallon average.

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post #13 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

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Originally Posted by Alex W View Post
Since that makes for a stinky boat we have a different rule. If you are a boy and aren't in a marina then you pee over the side (legal, even though bucket and chuck it is not).

A 20 gallon tank lasts 5-7 days of cruising for us, a sample size of one couple.
42 last 5-7 days for us, 4 people. Like I said, 1-3g, pp/day with 2 being the average.

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post #14 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

Our 25 gal tank would last the two of us about three weeks, but that's with most liquids going over the side (90% of his, 50% of hers), and very judicious use of water for flushing.

It's one of the big reasons I've gone to a composted.

Why go fast, when you can go slow.
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post #15 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

Boy you guys are good. I ve a lot to learn. Have choice of fresh or salt. Use fresh always except when offshore and need to conserve potable water. Much less stink and I think easier on the system. Wife insisted on electric so have one electric one manual both with macerators. Down side is even with three settings on electric use way more water then you folks are posting. Upside is have two holding tanks. The one for electric fills first. Have tank monitors. When other gets near usually time for fuel or pump out or a great excuse to go outside the limit. Conclusion is if tank size is a concern don't put in electric head. Have had guests push button repetitively fascinated by the flush until told to stop.

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post #16 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

Funny, the discussions between the ladies at the yacht club somehow always get around to poo and holding tanks. Something that was an eye opener for us was the 18 gal tank in our specifications only measured out to a paltry 13 gallons! The two of us are very comfortable for a weekend but really have to practice conservation when we are off the grid for a week or more. We installed a tank watch system for obvious reasons. When you are using the 1-3 gallons per day metric is that assuming a one gallon flush per use? My friend who has a boat by a European builder also discovered his tank was less than advertised.

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post #17 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

I'm surprised this isn't a bigger thread. A lot of us "day sailors" struggle with this problem. We don't "cruise" in the real sense. But, we do spend several days at a time on our boats. And, we have female crew, which is all I'm going to say about that. It's a three day weekend for me, and my one goal is to tear out my 70's era head, and then decide which way I'm going to go in regards to "solid waste". I'm looking forward to reading the responses in this thread. So far, I'm leaning towards a composting head. Although, the aforementioned poop bags look like a contender as well.
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post #18 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

We keep a spray bottle of citrus holding tank deodorizer in the head, like this stuff:
Camco 41197 TST 1 Gallon Orange Power Toilet Treatment

spray the yellow , and let it mellow- no stinky head, no full holding tank too quickly. our 10 gallon tank lasts the two of us a week or so.

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post #19 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

Our 15 gal tank lasts the two of us a week. We wash down solids and let liquids flow on their own. We don't use the salt intake unless we are out and going directly overboard. Inland the thru-hull is closed and we use the shower head to rinse the solids. I would prefer a bigger tank, but that's we have.

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post #20 of 115 Old 01-15-2014
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Re: How big a holding tank vs. camping

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Originally Posted by Alex W View Post
Since that makes for a stinky boat we have a different rule. If you are a boy and aren't in a marina then you pee over the side (legal, even though bucket and chuck it is not).

A 20 gallon tank lasts 5-7 days of cruising for us, a sample size of one couple.
Actually the bucket is legal as long as its not designed for pee and doesn't have a toilet seat on it it still comes under the loose rules of direct discharge but I still have and use my porta potty for poo underway and on the hook pee is fine but I hate to see floaters in the water I'm anchored in its just not nice to do in port. with just poo I get about a month for my 8 ltr porta potty and pump out stations are all over the place here in Puget sound I use sea water for flushing it

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