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Old 05-10-2018, 05:13 PM   #1
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Black tank woes

New member, first post. 2015 White Hawk ultra-lite 24RKS.

The black tank sensors have never really been accurate. Recently after complete dump and rinse, sensor registered full. Got a water jet thinking I could clean it out but discovered either a baffle or something solid near the opening to the toilet. Is this normal? Couldn't get the jet past it . Any ideas or thoughts? Thanks.
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Old 05-10-2018, 05:42 PM   #2
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Are you sure it's an obstruction or the bottom of the tank? Many black tanks are not very deep. I had another brand that had a 90 degree bend in it about a foot down, I never had any problems with the tank.

All OE sensors are crap, I'm so over worrying about what they indicate.
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Old 05-10-2018, 06:29 PM   #3
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My black tank is 40 gallons but probably only 6-7'' deep. Get a flashlight and you should be able to look down through the toilet to the bottom of the tank with no obstructions. Want more accurate sensors? Get some Calgon liquid water softener [not fabric softener] and add it to 5 gallons of water and pour it in the black tank just before your next trip so it sloshes around in the black tank as you drive. Worked wonders for me.
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Old 05-14-2018, 06:35 PM   #4
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Originally Posted by TCNashville View Post
My black tank is 40 gallons but probably only 6-7'' deep. Get a flashlight and you should be able to look down through the toilet to the bottom of the tank with no obstructions. Want more accurate sensors? Get some Calgon liquid water softener [not fabric softener] and add it to 5 gallons of water and pour it in the black tank just before your next trip so it sloshes around in the black tank as you drive. Worked wonders for me.
You may have solved my problem for me. I was about to ask what is the best way to drain and rinse out the black water tank on my 213QBW? I drain it and put a hose down through the commode and run it until the hose runs clear, but I'm not sure that's really getting rid of everything.

Would what you suggest above, putting something in the tank and letting it slosh around until I get to a dump site work? I would think something more cleansing than Calgon, unless it does more than I'm aware of, would be.

I am very open to any method of cleaning the black water tank out. If anyone has any suggestions I would like to hear them. Thanks
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Old 05-14-2018, 07:21 PM   #5
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The Calgon coats the sides of the tank making it slick so things don't stick to it as well, fowling the sensors. I also add a 1/2 cup of bleach and a couple of generous squirts on Dawn dish soap. Should've stated that in my previous post. Grey tank gets the same thing. It's called the GEO Method. Works for me. https://sites.google.com/site/cbruni/
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Old 05-14-2018, 07:35 PM   #6
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Originally Posted by BandC View Post
You may have solved my problem for me. I was about to ask what is the best way to drain and rinse out the black water tank on my 213QBW? I drain it and put a hose down through the commode and run it until the hose runs clear, but I'm not sure that's really getting rid of everything.

Would what you suggest above, putting something in the tank and letting it slosh around until I get to a dump site work? I would think something more cleansing than Calgon, unless it does more than I'm aware of, would be.

I am very open to any method of cleaning the black water tank out. If anyone has any suggestions I would like to hear them. Thanks

For the last year or so, after dumping the tanks, I add one cup "Rain Drops water Softener" and one cup "Happy Camper" (both at Amazon). No problems with the sensors or odor either.




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Old 05-14-2018, 08:06 PM   #7
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Originally Posted by TCNashville View Post
The Calgon coats the sides of the tank making it slick so things don't stick to it as well, fowling the sensors. I also add a 1/2 cup of bleach and a couple of generous squirts on Dawn dish soap. Should've stated that in my previous post. Grey tank gets the same thing. It's called the GEO Method. Works for me. https://sites.google.com/site/cbruni/
Thanks to you and John for your information. I think that takes care of my worries.

Now, if I just knew how to back this thing up better I'd be set.
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Old 05-14-2018, 08:09 PM   #8
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I added one of these so that I didn't have to drag a hose into the TT. Put a quick connect on it to make it easier to attach the water hose to it. It allows you to put it on the opposite side from the dump valve so you're rinsing towards exit but the connector is on the side with the dump valve...no running back & forth!

https://www.campingworld.com/tornado...YaAn7NEALw_wcB
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Old 05-14-2018, 08:25 PM   #9
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I added one of these so that I didn't have to drag a hose into the TT. Put a quick connect on it to make it easier to attach the water hose to it. It allows you to put it on the opposite side from the dump valve so you're rinsing towards exit but the connector is on the side with the dump valve...no running back & forth!

https://www.campingworld.com/tornado...YaAn7NEALw_wcB
Thanks...I'll check that out.
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Old 05-14-2018, 11:53 PM   #10
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How much Calgone?
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