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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Cleaning Black water tank

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workhardplayharder

Treasure Coast Florida

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Posted: 06/10/14 08:10am Link  |  Quote  |  Print  |  Notify Moderator

It's a tank to hold poo. It is not suppose to be "clean". If it is functioning correctly and you don't have odors you are ok. If you want to do something instead of putting a few gallons of water in put a few bags of ice in it and drive it.

korbe

California

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Posted: 06/10/14 08:14am Link  |  Quote  |  Print  |  Notify Moderator

We will often dump the black tank after a campin trip and before the trip home. In the empty black tank, I will dump the left over ice from out ice chest, and let that rattle around - and then melt during our trip home. I dump this when I get home. My sensors work fine after this process. I use my sensors to determine when the tank is clean - enough.


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rvten

Crossville,TN

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Posted: 06/10/14 08:53am Link  |  Quote  |  Print  |  Notify Moderator

I just flush out the tank a few times a year with a flush wand.
Some people go over board in trying to make the BLT real clean.

Only going to put more C--- in it anyway.


Tom & Bonnie
Crossville, TN.
Aspect 29H 2008 Type C
Ford Flex SEL 2010
There is NO B+


AllegroD

Outdare

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Posted: 06/10/14 10:55am Link  |  Quote  |  Print  |  Notify Moderator

Dick_B wrote:

Better to put in a capful of Calgon Water Softener and a 1/4 cup or so of Dawn dishwashing liquid before driving around.
Even with that the sensors may not work all/some/most of the time.


x2 Buy Calgin Drugstore.com

Drano is too caustic and though the GEO Method works, it is over kill.

vic46

Red Deer, Alberta, Canada

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Posted: 06/10/14 12:13pm Link  |  Quote  |  Print  |  Notify Moderator

In the event you have trouble finding Calgon, a very satisfactory replacement is 20 Mule Team Borax. Simply dissolve the borax in a gallon of warm water, mix well, and dump in the black tank. The mixing will let you in on the secret! The solution is super slippery ergo, less stuck to the tank and sensors.


Never argue with an idiot. You will be dragged down to their level and then beaten with experience.


down home

south

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Posted: 06/10/14 12:47pm Link  |  Quote  |  Print  |  Notify Moderator

The bag, of ice cubes, down the toilet, with maybe three-five gallons, of water, in the tank and Calgon and laundry soap does well.
Cleaning the sensors may require more water and ice?
I don't know what seals there are down there and Drano is strong stuff.
If you have a big mound of grease well maybe.
This is one reason, we take the time to filly tanks, black and gray tanks to capacity. Withe flush system connected let the black tang rip and let clean water flush for five minutes. close valve and put five gallons or so back in black tank. Turn selector to gray and let her rip and flush and let clean water flush for five minutes or so per mfg instruction.
Many folks develop black tank accumulations, that just dump the black tank and just go.
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J-Rooster

Port Orchard, Wa. / Lake Havasu City, Az.

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Posted: 06/10/14 01:13pm Link  |  Quote  |  Print  |  Notify Moderator

When I need to clean my Black Tank I use RV Digest! Six capfuls then completely fill your Black Tank and let it sit for 24 hours then drain. The enzymes in RV Digest eat up anything that was put in your Black Tank. Cleans all the sensors and is safe for the enviroment. Then I do spot checks after the cleaning, 5 gallons of water 1/4 cup of Dawn dish soap (blue in color) and let that splash around when I leave to go camping and after dumping my black tank and heading home. I never have used Drano and wouldn't think of it. Good Question and Good Luck.

SDHobo

Denver, CO

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Posted: 06/11/14 04:08am Link  |  Quote  |  Print  |  Notify Moderator

I looked everywhere in the Denver area for Calgon and 20 Mule. No luck in grocery stores, Drug stores, Hardware stores, Lowe's/HD and even CW. Nothing! I guess the water is too soft here for them to stock it. But I did find it on-line!!!

So, before you spend $8.99 for the 32oz bottle of Calgon at Drugstore.com, price the same stuff at Walmart.com. Much cheaper and their shipping is cheap too.


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Dick and Mary
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Effy

NC

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Posted: 06/11/14 04:43am Link  |  Quote  |  Print  |  Notify Moderator

I installed a hatch on mine through the floor and crawl in to scrub it out by hand.


2013 ACE 29.2


Coyote74

Statesville, NC 28677

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Posted: 06/11/14 06:36am Link  |  Quote  |  Print  |  Notify Moderator

Effy, the fumes are getting to ya!


Joe Taylor , Good Sam Life Member
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2004 Winnebago Adventurer 38R

Life's a trip, RVing makes it an incredible journey.

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