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08-25-2009, 05:13 AM
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#1
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2 Rivet Member
1976 31' Sovereign
Columbus
, Indiana
Join Date: Aug 2009
Posts: 47
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best way to deodorize?
We have just bought our first AS, a 1976 31' Sovereign. The previous owner left both tanks (black and grey) partially full - i would assume for a relatively long period of time prior to our purchase.
I have drained both tanks and flushed with LOTS of water. What is the best way to completely clean/deoderized these tanks? There is still an odor in our AS and it is coming from the bathroom.
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08-25-2009, 05:35 AM
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#2
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Rivet Master
1963 26' Overlander
Austin
, Texas
Join Date: Feb 2008
Posts: 2,640
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Well, I guess the good news is that your tanks apparently don't leak...
I'll let the experts chime in, as I am just an RV rookie, but I would think letting some bleach water sit in them for a while might help.
Good luck!
-Marcus
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08-25-2009, 05:48 AM
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#3
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Moderator
2015 25' FB Flying Cloud
2012 23' FB Flying Cloud
2005 25' Safari
Santa Rosa Beach
, Florida
Join Date: Jul 2006
Posts: 13,159
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Greetings from the Florida Panhandle
For starters, I would go to a nearby RV supply store any get some of the commercial RV tank cleaning products. I would put some in per the instructions, add a whole bunch of ice, and immediately take a ride pulling the trailer. This would be the time to yest your braking capabilities. In other words, accelerate and stop quickly to get the ice to clean the inside tank surface. Needless to say, do this erratic driving in a large parking lot or other safe place. A little bleach in there wouldn't hurt either.
If the black tank was left long enough to completely dry with stuff in it, It could be a bigger problem. This is called :the black hills syndrome" and it very difficult to fix. It may take a number of ice runs and soakings to clear this up. In extreme cases, it may even require a tank replacement.
Good luck.
Brian
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2015 FC 25' FB (Lucy) with ProPride
2020 Silverado 2500 (Vivian)
2023 Rivian R1T (Opal)
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08-25-2009, 07:00 AM
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#4
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4 Rivet Member
1975 Argosy 24
Malakoff
, Texas
Join Date: Apr 2009
Posts: 490
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Garden hose....Fill and empty 3 to 4 times.
Then fill them and add some smell good and let
it sit awhile.
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08-25-2009, 07:05 AM
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#5
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Vintage Kin
Fort Worth
, Texas
Join Date: Nov 2006
Posts: 8,014
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Quote:
Originally Posted by kennethowens
Garden hose....Fill and empty 3 to 4 times.
Then fill them and add some smell good and let
it sit awhile.
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Look into superchlorination afterwards. Let it sit up for a good while.
The bigger problems (as to smell) is not the tanks but the terminations.
Remove toilet and re-set flange with new is where I would start. Same with dump valve.
Be sure to inspect/clean, etc the plumbing stacks (tank vents).
Mine didn't need this. I wanted this. Zero smell then or later.
New is new. Used smells like it.
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08-25-2009, 07:26 AM
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#6
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Rivet Master
1971 27' Overlander
Central
, Ohio
Join Date: Jun 2006
Posts: 2,365
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One bottle of PineSol Lemon - fill tanks with water and ice - add half a bottle of PineSol to each tank and follow instructions above for driving around.
Empty/rinse and then refill with warm water and 2 packets each of OxyKem holding tank treatment. Let is sit a day and drain. If you still have an odor - fill again and add a couple tablets to each of Thetford AquaKem deodorizer and let that soak.
You may also want to buy a tank flush wand to rinse the tank with. I would not use bleach in a black or gray tank.
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08-25-2009, 07:46 AM
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#7
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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As Brian said the ice trick is a good option, but start with an EMPTY tank (the ice floats) and add more ice as needed, the ice will last a lot longer. I used a combination of block ice cut large enough to fit through the flush valve and cubes in our "63" and it lasted 100mi and did a pretty good job.
A strong bleach mixture sitting for a week finished the job.
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08-25-2009, 10:01 AM
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#8
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Rivet Master
1973 27' Overlander
Tucson
, AZ
Join Date: Aug 2008
Posts: 1,480
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I was just starting lunch when I placed my cursor over the thread and saw the, untimely, preview. Gag.
Sorry your having this problem though.
Laura
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08-25-2009, 12:17 PM
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#9
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Rivet Master
1971 27' Overlander
Central
, Ohio
Join Date: Jun 2006
Posts: 2,365
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Using Bleach in Black/Gray Tanks.....
You may want to see this first:
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08-25-2009, 01:30 PM
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#10
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Rivet Master
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach
, Virginia
Join Date: Sep 2004
Posts: 7,801
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Vinegar - good old white distilled vinegar (bathroom vinegar) instead of bleach.
If you've ever had pet stains on a rug, there are all sorts of fancy odor eliminating chemicals - but basically most contain plain old vinegar.
Definitely use the ice cube trick to scrape away solids - use vinegar for the "funk". Works everywhere. Takes gunk off of shower doors and fiberglass too.
Resetting the toilet seal, and cleaning the vent stacks isn't a bad idea either.
Paula
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Today is a gift, that's why they call it the present.
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08-25-2009, 05:08 PM
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#11
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Rivet Master
2022 25' International
Savage
, Minnesota
Join Date: Dec 2007
Posts: 753
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It is also possible the smell is not comng from the tanks. I find the mid/late 70's era trailers have a smell from all the plastics that are still off gassing. The bathrooms are full of the stuff (plastics). You would have to search the threads to see what you can do about that, assuming all the black and grey tank treatments do not solve the problem.
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WBCCI/VAC 11736
AIR 25979
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09-15-2009, 07:00 PM
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#12
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1 Rivet Member
1994 30' Excella
Salem
, Connecticut
Join Date: Aug 2009
Posts: 16
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Holding tanks should only have approved products put in them. I'm a park owner and seem what happens when campers put bleach,pinesol, etc in them. This eat the rubber in gate valves and can cause a deadly chemical reaction.
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