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Old 05-01-2012, 07:28 AM   #1
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help on black tank cleaning

We are new owners of a used Winnebago Impulse and I am concerned that we are not properly cleaning the black tank. I appreciate any tips.

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Old 05-01-2012, 08:37 AM   #2
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Search here for the GEO method for cleaning tanks, ours were in poor condition too and it did the trick.
Might take a few times to work, seems mostly it is the water conditioner that does the trick.

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Old 05-01-2012, 08:52 AM   #3
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Let me point you to a discussion on the topic of black and gray dumping already underway in the Forest River owners thread. I have posted my process in this thread.

About dumping protocal: Questions

If you have build up the most popular process seems to be the ice method. Basically put 5 to 10 gallons or so of water in the black tank and then place a couple 7 to 10 pound bags of ice down the toilet. Then go on a bumpy and rocking drive. The sloshing ice breaks up the solids. Those that have done this report good results.

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Old 05-01-2012, 09:00 AM   #4
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The GEO method: https://sites.google.com/site/cbruni/

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'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 05-01-2012, 09:17 AM   #5
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All the above is sound advice.....One can add the flushkit inexpensively and simply. $25 and 10 mins work. Fits in the side of blacktank, hook hose and it sprays like a shower nozzle. This and the ice cubes, magic
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Old 05-02-2012, 06:21 AM   #6
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The other day I was at the dealership and as a habit I check the levels of the tanks before I leave. The black water tank was showing 1/3 full. I know the guys at the dealership aren't going to use my bathroom. One of the techs ran for his tool box and he pulled out a stick that attaches to a hose. At the bottom was a rotating sprayer. He lowered it into the toilet and turned it on. Then he drained the tank and the false reading was gone. He was kind enough to take me to the camper store and show me the device sold for 28$ but I went to Wal-Mart and got the exact same thing for 8$.
If you fear sustained buildup you may want to fill your tank and add double the normal chemical load and let it sit for about 48 hours then drain it and use the device I just spoke of.

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