Black Tank Treatments - Yay or Nay?

[chops1sc]

This is two-part thread....

I have been RV camping for most of my life. I can always remember my dad using the old blue liquid in the toilet after dumping the tanks. This what I did once I started camping with my family.

How many of y'all use chemicals in the black tank?

WHEN do you use the chemicals?

I have seen few videos that talk about the treatments becoming inactive after a long period of time sitting in the tank and even causing issues with build-up. My common sense light comes on when I think about adding the treatment before the trip.

Also, this is my first camper with a built-in flush for the black tank. Once I am done, do I need to add any water or anything?

Thanks in advance!

[opnspaces]

Also no chemicals. I run my sprayer while the tank is dumping. Then I close the dump valve and let the sprayer run for a minute or two then dump again. After that I close the dump valve and give the sprayer about 30 seconds maybe a minute then turn off the hose and store everything away.

Been doing it that way for 15 years and no real issues.

[dedmiston]

No RV chemicals for me. Every few dumps I'll add some Calgon liquid and some blue Dawn detergent, but that's it for us.

As far as flushing, I flush every time I dump unless I'm in a hurry and I'm staying someplace with full hookups the next night. Once the water flows clear, I'll close the black valve and keep the flush running for a moment to add a few gallons to the tank so there's something to swish around.

Try not to overthink it.