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Old 06-06-2016, 03:25 PM   #41
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Tank Wand

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Originally Posted by Al Fiallos View Post
Just my experience, but despite the hassel and trouble, for me nothing works better than a tank wand with good water pressure (60 psig). I prefer the wand with one (1) nozzle so I can direct it right at the lever sensors to break loose any stuck material and to sweep the bottom and sides to push solids towards the drain.
I agree. We use a wand to clean out the black tank before leaving camp. Our sewage hose has a clear extension, so I watch for clear liquid hoping everything is gone. So far, it's worked for us. Don't rely on the sensors.
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Old 06-06-2016, 03:32 PM   #42
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Some things work for spme people, other things work for others. The wand method works the best as you can turn it slowly around to hit every part of the tank walls. However, as soon as you start usingvthe tank, the erroneous readings usually reappear. If you occasionally look down the tibe, you can see the levels for yourself. That is the only true method of keeping track of the levels. After you have camped for a while, you will know about how long you can go, te warning signs of getting full, etc so the black tank sensors are almost unnecessary.

Good luck.
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Old 06-06-2016, 05:42 PM   #43
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It may be time to pull your probes and replace them.

There could be a big blob of dried on crude on the button.
I would recommend replacing the probes with Horst Miracle Probes.

Horst tank Probe Installation

Remember to put the shield "up" and use the black tank style probe in the gray tank too.
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Old 06-06-2016, 06:03 PM   #44
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Sensors

Don't remember the vendor but my new 2010 Tiffin Coach was the only RV with accurate black thank sensors. I believe they were stuck-ons mounted on the external portion of the tank. Seems this is the way all need to go.
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Old 06-06-2016, 06:12 PM   #45
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Yes they are the ones that seem to be the best way to go. It was sea something I think. They go outs and are not effected by goo. They are pricey though

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Old 06-06-2016, 06:50 PM   #46
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Sensir

Yes, they were Sealevel. Very quickly, you get to know how otter you dump. So I now solely use the calendar.
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Old 06-06-2016, 07:23 PM   #47
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I bought the Valtaro valve gate for about $40.00 at cw. I use it at the last stop on the way home. I fill the tank 3/4 full about 2 or 3 times. Cleans that black tank out like you won't believe.
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Old 06-06-2016, 07:26 PM   #48
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We full-timed for 21 years and tried everything for the black tank sensors. They are no damn good so you might as well forget it and estimate. Two of us can go for two weeks on the black water (40 gal) with no problem.
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Old 06-06-2016, 07:28 PM   #49
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Pricey, but work like a charm and easy to install with one wire daisy chained to each sensor.

https://www.garnetinstruments.com/rv-shop/products/
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Old 06-06-2016, 08:27 PM   #50
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Quote:
Originally Posted by Malabarbob View Post
Don't remember the vendor but my new 2010 Tiffin Coach was the only RV with accurate black thank sensors. I believe they were stuck-ons mounted on the external portion of the tank. Seems this is the way all need to go.
RV Holding Tank Monitor System | ModMyRV

These systems have their own set of issues. Dirt, road grime, and corrosion come to mind.
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