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Old 03-21-2019, 04:36 PM   #1
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De Winterizing Coach question

Leaving for Florida next week on maiden voyage.


Do you guys always sanitize your your water holding tank before use?
What is the measurement of Bleach that you add per gallon to the water?


Can we use something else?


Regards Jim P.
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Old 03-21-2019, 04:55 PM   #2
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I sanitize the system each spring. I use one cup of regular unscented bleach in my 45 gallon fresh tank. Run it into the plumbing system and let it sit for a couple hours. Flush with lots of fresh water.

There are other things you can use, like hydrogen peroxide, but they are more expensive and not as effective as bleach.
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Old 03-21-2019, 07:50 PM   #3
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I use a product called Spring Fresh. Do it by the instructions, fill the system with out the filter and let it sit a couple days till we are ready to leave. Drain and flush a couple times. Haven't had anything in 7 years.
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Old 03-22-2019, 08:38 AM   #4
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Hydrogen peroxide is more effective than bleach partially because bleach is high pH and c

Chlorine kills layer by layer and much better at lower pH and lower alkalinity waters

The reason peroxide it isn't widely used in water systems is the test is difficult at low levels and the residual isn't as persistent

Chlorine is cheap and easily tested for at ppm levels so easily monitored

You can smell it as well and there some issues with chloamines and taste

1 ounce of peroxide per 10 gallons of water for severe conditions or 1/2 ounce for normal situations

Severe would be if you have odors or know you used a contaminated hose to fill or something similar
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Old 03-22-2019, 08:44 AM   #5
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1/4 cup per 15 gal capacity is a recommended level.
It is time dependent and above should set 4-6 hrs. O'nite is a safe practice.
Weaker takes longer stronger is quicker. Caution w strong solutions as it can affect some matls adversely.
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Old 03-22-2019, 08:45 AM   #6
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1/4 cup of non scented bleach per 15 gallons of tank capacity. Run through the system with filters removed. Let sit at least 4 hours. Rinse thoroughly.
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Old 03-22-2019, 04:07 PM   #7
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I generally sanitize as part of my de-winterization. I fill the fresh water tank with about 20 gallons. Before I do this, I pour about a cup of bleach in the hose, then start filling the tank. The bleach gets mized in with the water.

I then run all a the faucets until the pink is gone and I can smell the bleach. I also also make sure the water heater gets filled.

Let everything sit for a couple hours, then drain and re-fill with fresh water.
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Old 03-24-2019, 08:22 AM   #8
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Quote:
Originally Posted by Waiter21 View Post
I generally sanitize as part of my de-winterization. I fill the fresh water tank with about 20 gallons. Before I do this, I pour about a cup of bleach in the hose, then start filling the tank. The bleach gets mized in with the water.

I then run all a the faucets until the pink is gone and I can smell the bleach. I also also make sure the water heater gets filled.

Let everything sit for a couple hours, then drain and re-fill with fresh water.
That's OK if you have a 20 gal tank.
Recommendation us to FILL the tank w proper qty of bleach for that capacity so you are wetting & sanitizing all of the tank surfaces... it's not just to get the solution through the plumbing.
A cup of bleach is about right for 60 gal tank if filled
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Old 03-24-2019, 09:07 AM   #9
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Quote:
That's OK if you have a 20 gal tank.
I have an 80 gallon fresh tank. I don't fill it completely when I sanitize, only enough to get chlorinated water into all the plumbing.
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Old 03-25-2019, 09:36 AM   #10
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I have an 80 gallon fresh tank. I don't fill it completely when I sanitize, only enough to get chlorinated water into all the plumbing.
What about the sides and top of the water tank including the gravity fill if you use it?

If I am going to the trouble of sanitizing then the tank gets filled completely
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Old 03-25-2019, 10:43 AM   #11
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Keep in mind the fresh water tank has a vent and is exposed to the atmosphere and to the immediate area where you are camped. In a campground there is most likely a sewer connection near by that just might have a bit of gas escaping and people tend to spill a bit of black on the ground from time to time. Therefor your fresh water tank is somewhat exposed over time. It just makes sense to sanitize the entire system. And while I am at this use a sanitizer to spray the hose ends and spigot and of course your hose should have been coupled together and stored in a tight container and certainly don't let the ends touch the ground.

Changing filters, same deal, sanitize the housing and threads and handle the filter with gloves. If there is a film in the housing it needs to be sanitized as well by soaking and scrubbing.
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Old 04-08-2019, 10:05 PM   #12
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The prevailing freshwater tank sanitizer is bleach. It's cheap and it works. But it's a pain to rinse out.

Wondering if anyone has considered the use of glass sanitizer, the stuff bartenders dip drinking glasses into after washing. I use this stuff to sanitize the equipment instead of bleach when I brew up batches of beer. I used to use bleach but it requires a lot of rinsing, the sanitizer stuff you just rinse and go. It's colorless and odorless. You'd still have to do a tank rinse but it won't smell and taste like a swimming pool like it does with bleach.

Can't seem to find any reference online to doing this and probably for good reason, but off hand I can't think of any. Not sure what a suitable concentration would be or what that would translate to for cost per treated gallon but surprised I'm not finding any reference to it at all.

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Old 04-11-2019, 09:07 PM   #13
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I found an application document for the stuff I was thinking of and it lists a few applications that would make you think aren't any different than sanitizing a potable water system. Seems one would only have to come up with a suitable concentration.

https://media3.cleanfreak.com/docume...-steramine.pdf

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Old 04-11-2019, 10:24 PM   #14
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I have had good luck with the tank freshener product that they sell at Walmart in the rv section. I used to use bleach, but found the smell persisted for quite a while. The tank freshener will get rid of any water smells, and sanitize your system without the bleach smell. If you have a water filter, just add it there. If not, add it into the hose before you attach it. I guess you could pour it down the gravity feed if you have one.
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