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 > Ozone to clean fresh water tanks

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steved28

Bellingham,MA,USA

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Posted: 08/23/19 11:03am Link  |  Quote  |  Print  |  Notify Moderator

Bill.Satellite wrote:

Since I full time, I also have not sanitized my fresh water tank in 20 years. There is more than enough chlorine in city water connections to keep the tanks clean day after day after day.


You are lucky that your municipality has a good record. Mine does not. On average, about twice a year, we get a reverse 911 call to the residence that the town failed a certain test of the water supply.


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steved28

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Posted: 08/23/19 11:05am Link  |  Quote  |  Print  |  Notify Moderator

ksg5000 wrote:

ScottG wrote:

Pour 1/4 cup of hydrogenperoxide in your fresh water tank. Totally safe and it will KILL all traces of bleach instantly.


x2. Also - some people are particularly sensitive to chlorine/chloramine - if your wife is one of those consider using an inexpensive water filter (charcoal based) when re-filling the FW tank. Charcoal removes chlorine.


Our RV does have a built-in charcoal based filter system. But it is after the tank.

Chum lee

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Posted: 08/23/19 11:49am Link  |  Quote  |  Print  |  Notify Moderator

Bill.Satellite wrote:

Since I full time, I also have not sanitized my fresh water tank in 20 years. There is more than enough chlorine in city water connections to keep the tanks clean day after day after day.


They key is USING THE WATER UP and replacing it in a timely manner. Chlorine dissipates over time, as it works. Similar to a swimming pool which constantly needs fresh chlorine, (mostly due to sun exposure) your fresh water tank needs new FRESH chlorinated water REGULARLY to stay bacteria free. Once the bacteria gets established, it takes a larger dose of chlorine to knock it out. Ozone works too and it also depletes over time.

Chum lee

joebedford

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Posted: 08/23/19 05:10pm Link  |  Quote  |  Print  |  Notify Moderator

steved28 wrote:

2oldman wrote:

Perhaps you're overdoing the chlorine. In 15 years I've done that exactly once, and I doubt it was even needed then.


Do mean sanitize the FW system? I hope not. Most articles I have read state to clean the tank at least every 3-4 weeks. More in hot weather if the water (or RV) has sat without use. I can tell immediately if mine has gone south of cheese. It usually starts with foul smelling water from the hot water tank.
I'm guessing you're not starting with good water. 3-4 weeks? Not for me. 3-4 years maybe.

StirCrazy

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Posted: 08/23/19 06:44pm Link  |  Quote  |  Print  |  Notify Moderator

wow, cant believe how many people are telling you to do somthing else when you already have a fantastic setup, you can disinfect every fill up, no chemicles or after taste at all. do you have more info on your set up? ie. what is the output of the generator etc? the only down side to O3 is that it might be hard on some of the plastices in the rv plumbing, if one were to replace the fixtures with metal ones then this would be come a non issue, or if you let it sit in your tank for a few hours then the o3 should be dissapated by the time you use it.

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joshuajim

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Posted: 08/24/19 10:17am Link  |  Quote  |  Print  |  Notify Moderator

steved28 wrote:

I was wondering if anyone else use O3 to clean their fresh water tanks/lines. After numerous complaints from the DW about our water smelling like chlorine or bleach, I now use a venturi when filling my tank which injects ozone from a small ozone generator. No more smell, and the O3 removes more nasties than chlorine.
We seldom drink from our tank, but we do brush our teeth, clean dishes, and obviously use it for showering.


Are you aware that ozone has a half life of about 30 minutes?


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TechWriter

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Posted: 08/24/19 12:22pm Link  |  Quote  |  Print  |  Notify Moderator

steved28 wrote:

I now use a venturi when filling my tank which injects ozone from a small ozone generator. No more smell, and the O3 removes more nasties than chlorine.

You are using this guy, right? The AZ2 manual is pretty straight forward and says you can treat up to a 500 gallon spa. Pretty impressive for under $100.

However, treating with ozone depends on water pH and dwell time. Ozone levels should be adjusted for different water pH levels and how long the the ozone contacts the water. I'm guessing the AZ2 isn't sophisticated enough to do all that.

Also, make sure to remove all filter cartridges ahead of your AZ2 as ozone will destroy these. Finally, since ozone is such a strong oxidizer is also can destroy natural rubber, some plastics, and synthetic rubber -- like gaskets.

Finally, your water may smell better, but there's a good chance the water isn't actually being disinfected and probably not your water tank and system either.

I suggest a UV system instead. None of the ozone side effects and UV does essentially the same thing as ozone.


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steved28

Bellingham,MA,USA

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Posted: 08/26/19 08:05am Link  |  Quote  |  Print  |  Notify Moderator

Quote:

Are you aware that ozone has a half life of about 30 minutes?


Yes, and I think that's the idea. After that the ozone has just turned to 02 and it has done its job as a disinfectant.

steved28

Bellingham,MA,USA

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Posted: 08/26/19 08:10am Link  |  Quote  |  Print  |  Notify Moderator

StirCrazy wrote:

wow, cant believe how many people are telling you to do somthing else when you already have a fantastic setup, you can disinfect every fill up, no chemicles or after taste at all. do you have more info on your set up? ie. what is the output of the generator etc? the only down side to O3 is that it might be hard on some of the plastices in the rv plumbing, if one were to replace the fixtures with metal ones then this would be come a non issue, or if you let it sit in your tank for a few hours then the o3 should be dissapated by the time you use it.

Steve


Thanks, I thought the same. This is the unit I use. Although there are many on the market. And this is the venturi. ANd yes, I just let the ozonated water sit in the tank. Unless I want to get some into the hot water tank, then I pump it through the HW system immediately.

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