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06-20-2015, 08:30 PM
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#1
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Rivet Master
2015 25' FB International
Join Date: Nov 2014
Posts: 572
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Grey Tank (Kitchen Sink) Starting to Stink
Any thoughts on how to make this smell go away? Bleach? Might just be our P trap but gotta do something about it before it gets out of hand.
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06-20-2015, 08:39 PM
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#2
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4 Rivet Member
2005 25' International CCD
Lilburn
, Georgia
Join Date: Dec 2011
Posts: 286
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In our trailer the smell was caused by a defective studor vent under the sink. Replaced that and everything was good.
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06-20-2015, 08:58 PM
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#3
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Rivet Master
2015 27' Flying Cloud
Newberg
, Oregon
Join Date: May 2015
Posts: 1,052
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Grey water tanks can grow some funky stuff, especially in the heat of the summer. I use the same enzymatic cleaner that I put in my black water and that takes care of it.
Mike
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06-20-2015, 09:38 PM
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#4
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Rivet Master
1974 31' Sovereign
1979 23' Safari
Wayland
, New York
Join Date: Jan 2012
Posts: 1,632
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Check the vent valve in the line from the sink to the tank. It's probably stuck and letting gasses into the cabin.
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06-20-2015, 09:48 PM
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#5
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Rivet Master
2015 25' FB International
Join Date: Nov 2014
Posts: 572
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Vent valve? Where's it? Or what's it look like?
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06-20-2015, 09:59 PM
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#6
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Rivet Master
2002 30' Classic S/O
Fleming Island
, Florida
Join Date: Nov 2013
Posts: 4,673
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Look under the sink, back against the wall. Mine is a black conical shaped fitting that looks like an oversize pipe cap. It has a valve in it that is supposed to let air in, but not out. That, however wasn't my smell problem. Road vibration had loosened all the fittings on the sink drains. When the gray tank gets full somehow it puts back pressure on the sink P-traps and they hold more water than they should. The loose fittings leaked just enough water under the sink to make it smelly. I drained the tank and tightened up the fittings (after taking it all apart expecting to find a stopped up trap - I didn't) and the smell went away.
I use the "GEO Method". My PO's let the black tank get pretty crudded up. It's getting better, but the sensors still aren't right.
RV Tank Sensors &The GEO Method – Wheeling It
Al
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
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06-21-2015, 12:54 AM
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#7
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4 Rivet Member
Curtis Wright
Currently Looking...
Eyren Haven
, South Jersey
Join Date: Apr 2014
Posts: 326
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Be careful using bleach. While it will work, it can make some horrific smelling and dangerous fumes when contacting organic stuff. Use lots of ventilation and thorough rinsing.
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06-21-2015, 04:32 AM
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#8
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Rivet Master
2007 Interstate
Normal
, Illinois
Join Date: Jan 2009
Posts: 18,082
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When I put a little pine sol in water to clean, I always wipe the kitchen sink out well and slosh a little of this down the drain.
When I use a little diluted bleach to clean the bathroom, I pour a bit of this solution down the drain.
Not at the same time.
Keeps everything smelling "neutral".
Maggie
__________________
🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚
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06-21-2015, 06:35 AM
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#9
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Rivet Master
2006 23' Safari SE
Biloxi
, Mississippi
Join Date: Nov 2011
Posts: 8,278
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The Geo Method.
http://Thegeomethod.blogspot.com/
Mix 1 cup Calgon, 1 cup dish washing soap and 1 cup bleach in 1 gallon of water. Poor equal parts down each sink and the shower drain. Make sure that water remains in the drain traps.
This can be used in both black and gray tank. I have been experimenting with this for the past month without the use of any additional septic or holding tank chemicals. So far no odors.
__________________
MICHAEL
Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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06-21-2015, 10:42 AM
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#10
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1 Rivet Member
2004 30' Land Yacht 30 SL
Nokomis
, Florida
Join Date: Nov 2006
Posts: 7
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Smelly gray water tank.
Rv Travel had a good suggestion for smelly tanks. 1/2 cup Borax to 1/4 cup Calgon Water Softner. I haven't tried it, but sound like it might work?
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06-21-2015, 11:11 AM
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#11
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4 Rivet Member
2011 30' Flying Cloud
Arvada
, Colorado
Join Date: Feb 2008
Posts: 411
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I too use a black tank "tab" a couple of time a year in the grey tank and that seems to prevent any smell issues.
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06-21-2015, 11:17 AM
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#12
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3 Rivet Member
2015 16' Sport
Upper Sandusky
, Ohio
Join Date: Feb 2015
Posts: 205
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We have the same issue with our Bambi 16 which only has a black tank. Anyone know if the above fixes apply to the Bambi?
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06-21-2015, 12:37 PM
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#13
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4 Rivet Member
2011 27 FB International
Tucson
, Arizona
Join Date: Apr 2014
Posts: 258
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Maggie and Michael are on the right track. For the past 15 years, the only tank chemicals we have used are Pine Sol and Cascade. Before departure and every time we dump the Grey Tank, we pour Pine Sol into each of the shower, sink and wash basin traps. Pour a little in the toilet as well. On the last day out, before departure, we send about a 1/2 cup of Cascade dishwasher detergent into each tank. When we get home we dump both tanks. Never had a smell. Oh -- and our sensors seem to work correctly.
BTW - tanks take a lot longer to empty than you (or I, at least) imagined. Invest in one of the clear elbow attachments for your sewer line. By watching the clear section, you can tell when you've gotten all the crud and paper out of the black tank. I dump, then run the sewer sweep for about 5 minutes, then dump again. I find it usually takes 3 cycles to really empty the tank. If you have a teenager along, count on 5 cycles (ask me how I know).
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06-21-2015, 01:02 PM
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#14
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Happy Wonderer
1997 25' Safari
Box Elder
, South Dakota
Join Date: Oct 2013
Posts: 66
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First thing is to not let organic material into the holding tank.
Can't avoid doing this totally, but make sure you have a fine screen strainer in the drain hole of your sinks. This helps quite a bit. Also, when connected to sewer, leave grey water tank valve open most of the time so waste water runs to sewer.
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― Leo Tolstoy
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06-21-2015, 01:07 PM
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#15
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Rivet Master
2007 Interstate
Normal
, Illinois
Join Date: Jan 2009
Posts: 18,082
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Quote:
Originally Posted by remphoto
We have the same issue with our Bambi 16 which only has a black tank. Anyone know if the above fixes apply to the Bambi?
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If your black tank is offloading odors, and you are using chemicals in there, may be that you need some pressurized water to remove buildup.
Some carry a separate hose, and one of those wand things that are made for such purposes.
Not having space for an extra hose, we always just ran the hose at a dump station into the toilet and flushed/cleaned it out that way.
Maggie
__________________
🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚
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06-21-2015, 08:39 PM
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#16
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Regular Guy
1978 31' Sovereign
Hot Springs
, Arkansas
Join Date: Aug 2014
Posts: 603
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All the above on checking the vents, and baking soda down the drain works great to kill the odors.
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06-22-2015, 09:00 PM
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#17
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Rivet Master
2015 25' FB International
Join Date: Nov 2014
Posts: 572
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Thanks for the advice. I'm leery about what chemicals I put down the drains and are using completely biodegradable soaps. (Supposedly) We do this because we are parked for an extended stay (two months) without a sewer hookup.
We are hanging onto the black tank for now and plan to dump tomorrow into a portable tank to haul of to the dump station. The grey tank we hold on to for a while then let drain off to a no walking area.
Some of our problem may be just that... hanging onto the grey stuff until the tank is mostly full. Normally we'd have sewer and leave the valve open. Will try draining more frequently and seeing if that's a start.
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08-14-2015, 03:27 PM
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#18
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New Member
1997 25' Safari
Lake Oswego
, Oregon
Join Date: Jan 2012
Posts: 1
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I also have a 25' 1997 Safari. Does the gray water tank have a vent pipe through the roof as does the black water tank? It doesn't appear to, but could conceivably share the black water vent. Opinions appreciated.
Odduck
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08-14-2015, 07:09 PM
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#19
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Rivet Master
2015 25' FB International
Join Date: Nov 2014
Posts: 572
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I believe mine does... 2015 model though. It has two of those little white stacks on the top. One over where the black vent goes through the bathroom and one I assume next to the shower, so opposite side for grey. Our problem was resolved when we stopped putting ANY sort of food waste down the kitchen sink and keeping the grey outflow valve open.
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08-14-2015, 07:21 PM
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#20
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Rivet Master
Currently Looking...
Mantua
, Ohio
Join Date: Jul 2005
Posts: 7,062
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If the gray tank stinks inside, the contents will stink wherever you dump them. Why not take the gray water to the dump station also? If you are in a park you may get in trouble just dumping gray water anywhere. Like a fine or dismissal from your campsite.
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