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Old 09-25-2016, 07:03 AM   #21
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Location: Eastern GTA, Ontario, Canada
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I'm using RV Digest-It tank treatment once a year.

Unique Natural Products | RV Digest-It Holding Tank Treatment | Safe Products That Work

2011 Rockwood Signature Ultra Lite 8293SS, 12K Equal-i-zer
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73, w/ snow plow & camper pkgs.
2010 Rockwood Roo 23SS (2012 - 2014)
2009 Ford F-150 XLT SuperCrew, 5.4L, 5'6" bed (2012 - 2016)

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Old 10-02-2016, 04:53 PM   #22
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Posts: 388
I use the cheap laundry detergent - I believe its "LA's Awesome" brand from the dollar store. Its a $1 for a container of it. I put half in the black, half in the grey tank, and a few gallons of water in each, after I dump the tanks. This way they slosh around on the drive home and then the next time we take it out, do the same on the way to the campground.

Then when we get to the campground, I add a packet of the chemicals to the black tank.

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Old 10-02-2016, 05:22 PM   #23
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We use the Geo Method periodically... nothing else.
2012 Rockwood Ultra-Lite 2701SS with ProPride 3P 1400 hitch
2013 F-150 FX4 7700# GVWR SuperCrew 3.5L EcoBoost 157" WB Max Tow 3.73:1
John, Dawn and Emily... and Bella the camping kitty

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Old 10-02-2016, 06:29 PM   #24
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Holding Tank Treatment

This is our 2nd 5th Wheel & we've used the Geo Method in both. (8 yrs in 1st 5r & 2 yrs in 2nd).
We never had False Probe Readings or Odor Issues from the 1st 5r & no False Probe Readings from the 2nd 5r. We have had Odor Issues with the 2nd 5r, but I blame the Odor Issues on the "Flat-Bottom Holding Tanks" that Forest River has installed in their 5th wheels.
If anyone is not familiar with the "Geo Method", Google it. It is basically using household chemicals in the holding tanks. (Calgon Water Softener, & "Cheap" Liquid Laundry Detergent)
The Laundry Detergent keeps the tank walls clean & the Calgon keeps the tank walls slick.

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black, black tank, drain, tank

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