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Old 08-27-2016, 06:42 AM   #11
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All sorts of good info on YouTube about proper care and maintenance of black tanks.

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Old 08-27-2016, 12:29 PM   #12
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Smell coming up from toilet..

Originally Posted by strut526 View Post
My sister is a seasonal weekender, lately she has noticed that after she dumps the tanks, and does the water and toilet tabs for the following week. When she comes back, first and second flush usually has the black tank odor. Nasty. She puts in 3 gallons of water for set up. Is there something she is doing wrong? Is there a reason for the smell? I have been camping in my 5th wheel for years, and never had an odor issue.

Maybe give these a try! Works on black and gray vent stacks.

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Old 08-27-2016, 12:52 PM   #13
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X 2 on trying a different deodorizer. I have had a couple over the years bought when my usual brand wasn't available that didn't perform as well.

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Old 08-27-2016, 12:56 PM   #14
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When you open your black water valve to dump your black water into the sewer, you also open the way for sewer gas to fill your tank from the sewer.

If you wait a while, the smelly gas will eventually exit through the black water tank vent on the roof.
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Old 08-27-2016, 01:51 PM   #15
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To be safe add about 1 c. Bleach. That will clear any bacteria or fungi that is in there. You can also add some Tide & softer when you get ready to dump. It works.
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Old 08-27-2016, 02:04 PM   #16
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Originally Posted by rockfordroo View Post
They're seasonal weekender's, (TT stays in campground all season?), so I suspect they aren't going to be driving around awhile.

They need dump the black tank and then add a few gallons of water and deodorant before they leave for the week. Might also add some stuff to break down whatever's left in the tank.
Try RidEx, it is made for Septic tanks and does a good job breaking p the solids once they get wet again. You can get it at Wal Mart
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Old 08-28-2016, 11:46 AM   #17
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Simple Trick

My guess is the bowl is dry. If so there is a slight leak between the ball and the toilet. There are ways mentioned above to clean the tank and clean the ball but this is before doing either.

After flushing the toilet pour 1/2 cup of water into bowl and let it sit. Odor will be gone...until that bowl is emptied again.
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Old 08-28-2016, 06:15 PM   #18
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better than wand cleaning .... have a 5 gal bucket that we fill with water & DUMP down toilet after black tank is emptied .... really breaks everything loose. Have done it down all the sinks as well to really rinse the lines to the grey tank. Amazing all the stuff that comes thru
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Old 08-29-2016, 04:27 AM   #19
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I think they are not letting the chemicals do their job. They dump after every long weekend. We are all leaving today, so we will try what was suggested. Thank you all!
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Old 09-06-2016, 02:49 PM   #20
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We use the GEO method rather than deodorizers. There is an article on it here on FR forums. I find that our camper doesn't smell but our sensors don't work well. I know that it's probably because something is covering it. We are weekend campers (about once a month in the spring and summer). I just did the extra flush of clean water in the black tank and got it to showing that the tank is 1/2 full. I don't mind that the sensors don't work but need help estimating how full the tanks are. How many days with regular use will a 28 gallon tank last?

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