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Old 01-19-2015, 09:06 AM   #151
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Join Date: Feb 2012
Location: Wisconsin
Posts: 9,512
Originally Posted by Kris10May View Post
We are pretty close to taking the plunge and going permanent this summer. I'm assuming all the same rules apply to black water tanks going into our 110 gallon holding tank. You still must treat the water in the black tanks and let the camper holding tank fill before emptying into the external tank. Right??

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We've been using the Geo Method (Google or Bing it if you've never heard of it) in our black tank for years with good results. Be aware that some campgrounds don't allow formaldehyde tank treatments. Yup, let the black tank fill, dump it first, then the grey tank(s) to flush the hose.

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Old 01-19-2015, 09:23 AM   #152
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Join Date: Jun 2012
Posts: 32
Thanks. I've used the Geo Method in the past and will most likely continue if we make this switch.

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