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Old 09-29-2016, 12:21 PM   #15
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Originally Posted by Caswelld View Post
2 X on the Happy Campers, Walmart & Amazon have it.

One other thing I do before storage is the fill the black tank 1/4 full, put in a cup or more of dish detergent, a cup of Downy Fabric Softener (both mixed with water before pouring into toilet), and then 2 bags of ice.

Driving for 4 or 5 hours with the ice sloshing around cleans it really well.

Also 2 X on everyone's comments on using lots of water when flushing.

I can't find it on the Wal-Mart website and I've never seen it in their stores. When you do a search for it on their site, it comes up as a "sponsored ad", but that's not Wal-Mart!

Joe & Annette

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Old 09-30-2016, 05:31 AM   #16
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That's right Joe, no Happy Campers in Walmart, just ask my wife Thought I'd gotten it there.

The HC web site has a good article about cleaning black & gray tanks:

Happy Campers-Odorless-RV Holding Tank Treatment for Black and Grey Water Tanks

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Old 10-02-2016, 12:42 AM   #17
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Also, don't drain the black until 3/4 or more full. Then flush hose with the grey.
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Old 10-02-2016, 08:42 AM   #18
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Your local Rv shop can install an aftermarket flush out system for you they work great. I put on on my class A in about 45 minutes. The ice trick does not work well the ice melts away too quickly, this has been proven in tests. Use plenty of water on flushing and as someone else noted you can use a toilet wand to help out, all camping/Rv suppliers have them, also have seen them at some Wal Mart. I used just a garden hose to clean out my holding tank... don't use this hose for drinking from afterwards.
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Old 10-02-2016, 09:59 AM   #19
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Forget the ice trick. It doesn't work. Put some cubes in a 5 gallon bucket 1/2 full of water and tip the bucket side to side. The cubes will move so slowly they couldn't possibly break anything up.
There are many different flushing wands available. I have one of the flexible Camco wands which I use only on occasion. You aren't going to thoroughly clean the tank in a minute or two either.
Water is your best friend in these situations. Fill, dump, fill, dump and repeat until you get the desired result. Not 1/2 or 3/4 full but FULL each time.
Chemicals can be helpful but only if you give them adequate time to work. Forget the recommended amounts. Sock the chemicals to it if you decide to use them. "Rid-X" made for residential septic systems is as good as any branded RV chemical and maybe even better. It is just a lot cheaper because it doesn't say RV on it anywhere. This is available nearly anywhere.
Driving around might accelerate the cleaning process but you could drive a lot of miles before you had any real cleaning action.
Id rather spend a few hours really cleaning the tank and getting it clean than driving around just to find the tank was still stuck up with s***. (Stuff)

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tank, toilet

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