Cleaning out water tank? - Page 2 - Fiberglass RV


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Old 03-23-2015, 08:15 PM   #15
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Good point Donna ! Just finished installing ours.

Organic dairy farmers around here use Food Grade Hydrogen Pyroxide to disinfect. It's great stuff, but you have to be VERY careful, as it's highly concentrated, thus extremely corrosive.
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Old 03-23-2015, 08:35 PM   #16
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Food Grade Hydrogen Peroxide (H2O2) is very, very expensive when compared to common bleach and really won't do any better a job.


In some venues you can't buy that strength over-the-counter and have to have a permit. It's a primary ingredient (oxidizer) in some rocket fuels and is useful when making homemade explosives. Stick with the bleach....


I used to have to buy it from a source in Texas and there was all kinds of paperwork and permits required for the strength I was buying for cleaning cooling systems in direct-to-plate imagers.
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Old 03-23-2015, 09:23 PM   #17
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Unfortunately, with our 5.0's I think we have to put the plate in the bottom of the tank. Or cut a hole in the floor.
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Old 03-23-2015, 09:46 PM   #18
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Unfortunately, with our 5.0's I think we have to put the plate in the bottom of the tank. Or cut a hole in the floor.
Or just put in a bunch of vodka in the tank and drive around a bunch!

Who has the olives?
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Old 03-23-2015, 09:49 PM   #19
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I think it's not necessary to ever dry out the tanks. In my opinion if the fresh water tank is always full there's no room for stuff to grow.
If you look at city reservoirs you'll see they never empty them unless there's been some know contaminate introduced into them.
When empty there's always the chance of collecting some moisture and growing algae. Algae needs air to grow.
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Old 03-23-2015, 10:00 PM   #20
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There was recently a similar thread on this.
Fresh Water Tank....

Per Mark Nemeth's recommendation, I used "cleaning strength white vinegar"
to clean out any residual RV antifreeze during my recent de-winterization.

For thorough cleaning and bad taste removal, maybe the white vinegar?
For heavier duty disinfecting, perhaps a stronger bleach solution?

Ray



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Old 03-23-2015, 10:01 PM   #21
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How do you get rid of the vinegar taste?
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Old 03-23-2015, 10:08 PM   #22
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Same as the instructions for my coffee pot.
Just a thorough flushing with fresh water after the cleaning. .???

After the de-winterization, I haven't the opportunity to use the fresh water tank yet.
..... just the city water inlet last time out.

Ray


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Old 03-23-2015, 10:48 PM   #23
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"Or just put in a bunch of vodka in the tank and drive around a bunch!

Who has the olives? "

And then, who cares? We don't need no stinkin' clean water.................
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Old 03-24-2015, 12:10 AM   #24
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Originally Posted by Bob Miller View Post
Food Grade Hydrogen Peroxide (H2O2) is very, very expensive when compared to common bleach and really won't do any better a job.


In some venues you can't buy that strength over-the-counter and have to have a permit. It's a primary ingredient (oxidizer) in some rocket fuels and is useful when making homemade explosives. Stick with the bleach....


I used to have to buy it from a source in Texas and there was all kinds of paperwork and permits required for the strength I was buying for cleaning cooling systems in direct-to-plate imagers.

Well Bob, I was just bringing up a product that I used to use and like, because it did an excellent job with NO odor, and took so very little to work, it wasn't cost prohibitive. But I agree, not for a novice.
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Old 03-24-2015, 05:30 AM   #25
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Originally Posted by Byron Kinnaman View Post
I think it's not necessary to ever dry out the tanks. In my opinion if the fresh water tank is always full there's no room for stuff to grow.
If you look at city reservoirs you'll see they never empty them unless there's been some know contaminate introduced into them.
When empty there's always the chance of collecting some moisture and growing algae. Algae needs air to grow.

Fresh water RV tanks are a piece of cake. After working 30 year for a major water district I can tell you how our 20+ storage tanks, above and below ground were maintained. Every two to three years they were emptied, cleaned and checked for any maintenance repair. All our raw incoming water went through our treatment plant, even if was treated water. At the end of the filtering plant chlorine was added as per the chemists tests before it was introduced into the system. BTW, chlorine dissipates fairly quickly as it travels down the line and sunlight makes it even faster. Our testing and filtration was always over and above federal standards too.
I add a cup of bleach, a hot mix once a year to my full tank, run the water through the faucets, let it sit for a day and flush it once. Been doing that for over 30 years with many RV's with no problems and also use it for coffee. I do have to add that I always leave the house with a full fresh tank and a few one gallon jugs. Good water here at the house . I also keep the tank full when parked and I'm in the desert with 120+ summer temps and have had no problems with anything growing in the tank. I also have a deck plate added just to check on things and have had no problems with something "growing" in the tank.
From reading posts it seems that most are worried about "bad tasting" water from camping spots or leaving water in the tank. Totally understand that and can't change where you have to get water from on a trip. Just telling everyone that using chorine/bleach to sanitize your tank is all you need to do. Easy, quick and cheap.
Anyway, that's my two cents worth from my career of serving a few million customers with good water.
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Old 03-24-2015, 08:19 AM   #26
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Dave---your experience is good enough for me! Thanks. We haven't ever used our water tank. But this summer we intend to give it a go when doing some boondocking so I will gratefully heed your advice.
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Old 03-24-2015, 08:50 AM   #27
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Dave,

Since you appear to be from California, I'm guessing that you may have
no need for the RV antifreeze winterization process that we mid-westerners
have to go through? (either in your RV tanks or your professional tanks?)

Do you know if a bleach solution will also dissolve/remove any residual RV
antifreeze in an RV fresh water tank?

I had heard so many stories about bad tasting water from bacteria-free
(bleach-sanitized?) tanks, that I figured to use the cleaning strength
white vinegar to dissolve/remove any antifreeze residue and then, maybe
closer to the end of the camping season, use the bleach solution to more
completely sanitize the tank before winterization with RV antifreeze.

Does that sound like a workable solution to you or is it just plain
overkill?

Ray
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Old 03-24-2015, 09:08 AM   #28
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Also in agreement with Dave, Chlorine Bleach is the way to go. Anything else is at ones own risk and peril. Here's another link from those that should know:https://www.clorox.com/dr-laundry/bl...g-water-tanks/
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