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dedmiston's avatar
dedmiston
Moderator
Jul 06, 2020

Do ice cubes in the black tank really work?

I stumbled across an interesting YouTube video today that takes a look at the age old topic of pouring a bag of ice down the toilet.

From what I can tell, it helps but only a little. I hadn't thought of this before, but since ice floats, it really doesn't make contact with the solids at the bottom of the tank unless you drain the liquids first. I think the quantity and makeup of the ice would be big variables too.

The video is worth a watch though.

SENSITIVITY WARNING: There is no actual human waste in the video, but he uses simulated waste per a NASA testing recipe. Personally, I score this a 4 of 10 on the yucky scale. As much as we discuss tank maintenance on these forums, there shouldn't be anything we haven't already discussed here before. Nobody should be shocked.

https://www.youtube.com/watch?v=iH6acEmqvcw
  • kellem wrote:
    I've heard that for years.

    Was under the assumption that folks mainly used the ice when the gauge quit working and must be driving for it to be effective.

    Personally have never tried it but do add a couple gallons of water and Dawn dish liquid after dumping the black tank.
    It's been a very effective method for many years.

    Same here: Water, Dawn, and some Calgon. The gauges have worked great since I started doing this a few years ago.
  • I've heard that for years.

    Was under the assumption that folks mainly used the ice when the gauge quit working and must be driving for it to be effective.

    Personally have never tried it but do add a couple gallons of water and Dawn dish liquid after dumping the black tank.
    It's been a very effective method for many years.

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