Im pretty religious about dumping my tanks after each outing but this last trip pulled a brain fart and forgot to dump and have put the trailer in storage. Contemplating whether I should pull it out and dump or just wait til next outing? Tank is only about 1/4-1/3 full and no sign of odors yet. Pull it out and dump or leave??

I empty mine every 2nd or 3rd outing, as a single guy, I don't generate much black water over a short weekend. The gray tank, that's usually after every 2nd, as I waste a lot of water washing hands and dishes.

Depends on how long it will sit idle.If it's more than a month, I'd take it out for a dump. The solids can clump together and make big floating island that would be hard to dump later.And I would also give it an extra dose of "toilet chemical" or bleach and soap if you don't dump it.

Bleach will kill the beneficial bacteria in a holding tank. Just leave it alone till next time, assuming there is plenty of water in the tank.

I would also say depends on how long. Over time heavy solids will settle to the bottom and may be harder to flush out.

put some RV-Digest it in the tank and then it will be liquid by the time you use it again

Leaving black tank filled | Good Sam Community

Pipeman
Explorer
Jun 07, 2016
put some RV-Digest it in the tank and then it will be liquid by the time you use it again
BB_TX
Nomad
Jun 07, 2016
I would also say depends on how long. Over time heavy solids will settle to the bottom and may be harder to flush out.
wildtoad
Explorer II
Jun 07, 2016
Bleach will kill the beneficial bacteria in a holding tank. Just leave it alone till next time, assuming there is plenty of water in the tank.
Sam_Spade
Explorer
Jun 07, 2016
Depends on how long it will sit idle.

If it's more than a month, I'd take it out for a dump. The solids can clump together and make big floating island that would be hard to dump later.

And I would also give it an extra dose of "toilet chemical" or bleach and soap if you don't dump it.
GordonThree
Explorer
Jun 07, 2016
I empty mine every 2nd or 3rd outing, as a single guy, I don't generate much black water over a short weekend. The gray tank, that's usually after every 2nd, as I waste a lot of water washing hands and dishes.

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