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Old 03-10-2015, 02:56 PM   #1
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Adding a gray water tank to PUP?

Has anyone added and additional gray water tank to their popup? My 12 gal. just is not enough for use without sewer hookups. I haven't really looked underneath yet, just wanted to know if it can be done.

2009 Flagstaff HW27SC (NTU 2014)
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Old 03-10-2015, 03:04 PM   #2
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How about just getting a blue tote? Very likely a cheaper and easier solution. You can have tanks made in any size and configuration possible, but they are not inexpensive. Then you are looking at hanging and plumbing them which the nickels and dimes add up quickly. Biggest issue I can see with a PUP is your lift mechanism presenting obstacles.

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Old 03-10-2015, 03:46 PM   #3
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Yep, we use a tote. Makes it easy to take to the dump station when we are camping long term as well. Just loop the tote handle over the hitch on the tow vehicle and drag it to the dump and drag it back....
HTT: "EscapeII" 2016 Shamrock 23WS (current)
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Old 03-11-2015, 09:08 AM   #4
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Thanks for the input. I have considered the totes but just wanted to avoid carrying and dealing with another "accessory".
2009 Flagstaff HW27SC (NTU 2014)
1999 Ford F150
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Old 03-11-2015, 09:48 AM   #5
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Hi Branch,

Just to clarify. You may not have a single 12 gallon grey tank but rather two 6 gallon grey tanks that are connected.

Installing a grey tank is very easy. I think your best bet would be to simply take out your fresh water tank and place a large grey tank there. You could even turn your fresh water tank into a grey tank if you want.

Your biggest problem is going to be finding a clear space under the floor to mount the tank. Crawl under there and you will see.


2015 HW296
2006 HW256 (previous pup)
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Old 03-11-2015, 12:26 PM   #6
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I used to use a 15 liter pail i scavenged that had a lid. I cut an old washing machine hose to go from the outlet to the pail.


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tank, water, water tank

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