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Old 07-28-2015, 11:56 PM   #1
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Black water tank - temporary storage

I'm seeing in the forums a lot of different ways to keep the black tank when not in use.

Some people leave a few gallons of water in it, some do not. Others add soap.

My TT is parked next to my house and I'm taking it out camping about one weekend per month. I'm using the Geo method to dump the tank, but havent settled on a good method yet to store the tank for the couple of weeks per month.

I'm figuring, in my non-expert opinion, that leaving water in the black tank for several weeks is worse than leaving it empty. Seems like if there is water, there is lots of opportunity for things to get worse.

What has been your experience? Are both methods (empty or a few gallons of water) working well for folks?

P.S. My black tank only services the toilet. The shower and sinks all drain to the grey tank.

Thanks!
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Old 07-29-2015, 01:04 AM   #2
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The only thing that stays in ours over the winter is that little bit of antifreeze and water that comes from winterizing the p-traps. Overfill the p-traps with antifreeze, that way you know some gets down to the gate valves with the residual water.
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Old 07-29-2015, 01:19 AM   #3
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What I see most often is the recommendation to leave a gallon or two of water and tank chemicals during storage.
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Old 07-29-2015, 01:31 AM   #4
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What I see most often is the recommendation to leave a gallon or two of water and tank chemicals during storage.
That's gonna destroy the black tank outlet and gate valve during the -40 cold snap.
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Old 07-29-2015, 02:13 AM   #5
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Sorry, I should have mentioned that there is no issue with freezing where I live.
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Old 07-29-2015, 02:22 AM   #6
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Sorry, I should have mentioned that there is no issue with freezing where I live.
No worries - relocation to the Wet Coast is on our bucket list. Getting weary of the two months of lousy dog sledding lifestyle.
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Old 07-29-2015, 05:00 AM   #7
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You should always leave something in the tank winter or summer. You do not want your seals to get hard. In the winter a little anti, during the summer water and chemicals if that what you use, IMO you will have more problems if you do not keep some liquid in the bottom.
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Old 07-29-2015, 06:49 AM   #8
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Old 07-29-2015, 07:36 AM   #9
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Quote:
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That's gonna destroy the black tank outlet and gate valve during the -40 cold snap.
We don't have that problem in Texas!
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Old 07-29-2015, 12:52 PM   #10
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Originally Posted by gljurczyk View Post
You should always leave something in the tank winter or summer. You do not want your seals to get hard. In the winter a little anti, during the summer water and chemicals if that what you use, IMO you will have more problems if you do not keep some liquid in the bottom.
Without threat of freezing, leave some water and the normal potty chemicals in the tank. A dry tank will allow any remaining crud to dry out and cause future problems when trying to drain at a dump station.
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