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Old 11-07-2017, 02:11 PM   #1
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black water holding tank

i was wondering if it hurts anything if you leave a little feces and urine in
your black water holding tank? i know u are suppose to dump everything
out asap which i usually do. but the last time out we had dumped at the
last rv park. but about half way home my wife had to use the toilet and so
we came home with stuff still in the holding tank. i put some tank deodorant
in the tank for the smell but i dont have a dump station near my house and
i will have to wait until we go out again in the motorhome before i can dump.

just wondering if this will harm the holding tank or is it nothing to worry about?


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Old 11-07-2017, 02:15 PM   #2
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Not a thing to worry about.. Your tanks are designed to "hold" fluids and waste.

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Old 11-07-2017, 03:44 PM   #3
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Originally Posted by LucasOil View Post
Not a thing to worry about.. Your tanks are designed to "hold" fluids and waste.
Agree. I also wouldn't let it dry out (harden), so adding a little more water wouldn't hurt.
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Old 11-07-2017, 04:29 PM   #4
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Originally Posted by DKStall View Post
Agree. I also wouldn't let it dry out (harden), so adding a little more water wouldn't hurt.
I agree, by a little more water, I suggest at least 5 gallons or more.

Side note, water freezes if that is a concern.
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Old 11-14-2017, 10:06 PM   #5
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Actually, it is best if you flush the black water tank until it is full. Of course, if you only went to a weekend trip, you don't want to have your tank with some waste until your next trip, but if you had to use it, as you did, just put some more water to it and add the water treatment of your choice. Your tank can hold waste indefenetly. Never leave it dry.

Another advise. If you store your RV and your tanks are clean, don't leave the gate valves open. That will dry out the seals. Close both of them and pour some clean water into your tanks. What I used to do before full timing, was to leave both tanks almost full with clean water and 4 scoops of Odorloss. That ensure to keep my tanks really clean without any odors.

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tank, water

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