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Old 04-05-2014, 11:14 AM   #1
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Black Tank

I read on this forum about a way to clean the black tank. I first dumped the black tank. Then I added 2 cups of water softner, 1 cup laundry soap, half gal bleach. After I added the bleach, I saw white vapor coming out of the toilet. So I added more water to the black tank.
Has anyone ever had this happen? Thanks, John Sturges

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Old 04-05-2014, 11:18 AM   #2
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Ahh, I think that should have been a half cup of bleach, not a half gallon!

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Old 04-05-2014, 11:22 AM   #3
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Originally Posted by bdickson View Post
Ahh, I think that should have been a half cup of bleach, not a half gallon!
Careful with bleach...that white vapor can be deadly.

Aside from that, you're probably ok adding some water. Once you've flushed out all that stuff and have the tank clean, put several bags of ice down the toilet and take the RV for a spin for an hour or so. The ice will scour the bottom of the tank, breaking loose some of the caked on gook, and then dump and flush the tank again...works good.
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Old 04-05-2014, 01:01 PM   #4
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Bleach + ammonia products is a very dangerous mix so watch that aspect.

As for the "geo method" - does he suggest that mixture all in together.
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Old 04-05-2014, 01:06 PM   #5
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When mixed with bleach, certain chemicals can release chlorine gas which is very deadly. Be very careful with your junior mad man chemistry experiments.

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Old 04-05-2014, 02:31 PM   #6
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Not only too much bleach, you should be using dishwasher detergent (low sudsing)
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Old 04-05-2014, 03:39 PM   #7
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You should go to http://https://sites.google.com/site/cbruni/.
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Old 04-05-2014, 05:26 PM   #8
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Originally Posted by lanerd View Post

I don't know what's happening with my post. I've tried to edit it and it keeps going back to my original post with no editing. Now, it won't even provide the link that I had in the original post.

In any case, I'll try again.

For the GEO METHOD procedures, go to this link:


Hope this helps

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Old 04-05-2014, 05:41 PM   #9
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Why bother with the Geo Method at all? All that mixing, pouring and expense! A 53 cent treatment of Happy Camper works as well or better and no possibility of creating dangerous gases.

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