Liquid fabric softener and black/gray tank smell

If you are getting smell from the gray tank at any time something is wrong with the system.

If you are getting smell from the black tank other than when flushing the toilet something is wrong with your system.

Other than vents through the roof they are both closed systems.

I use H2O to soften the water (and other stuff) in my tanks.

20 mule team borax is what I use for a water softener.

I use a small coffee scoop (3 Tablespoons appx) in every load I wash in my Splendide washing machine. Close the gray valve while you wash a load and then open and drain the gray tank (keeps the machine smelling nice, too) I think one load uses 11 gal of water. So the gray tank is empty when I start doing laundry...and emptied after I pull the valve before the gray tank gets over full.

And I use it for taking the toilet bowl stains out. A few hours before I'm going to empty the black tank, I put 1/2 cup of 2X HE laundry detergent (I use WHISK) and 1/2 cup of 20 mule team Borax into the toilet bowl. Then I use the toilet bowl brush to mix it up while I fill the toilet bowl with water.

Let that set for a couple of hours then drain and rinse the black tank.
However you do it... If you have an in tank sprayer, it's much easier.
If you have to put a hose down into the black tank thru the toilet to spray water into the tank, then you will need to put another dose of laundry detergent and 20 mule team into the Black tank after the valve is closed.

In other words...when you get done... put some water into the black tank and flush the toilet so that you have laundry detergent and 20 mule team Borax in the tank.

I've been doing this for a long time... you might have to use more 20 mule team Borax in the beginning.

The Wal-Marts I go to carry 20 mule team Borax.

But Snuggle smells so nice! :)

Charles Bruni's Geo Method is what you're referring to, I think. It works well with Calgon water softener.

Use WATER softener and laundry detergent - about 1 cup of each. Water softener and fabric softener are not the same. It help prevent stuff from sticking to the tank. Calgon water softener is one brand

http://www.google.com/#sclient=psy-ab&q=geo+method+for+cleaning+the+holding+tanks&oq=geo+method&gs_l=hp.1.1.0l3.0.0.1.416.0.0.0.0.0.0.0.0..0.0...0.0...1c..17.psy-ab.uxaKmou8Vcg&pbx=1&bav=on.2,or.r_qf.&bvm=bv.47883778,d.cGE&fp=5e1fc751530a23ac&biw=1366&bih=622

Or a ton of water over and over again

Why??? For what???