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| hydrogen peroxide | Rate Topic |
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| Posted: Mon May 31st, 2010 04:02 pm |
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1st Post |
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peterlysaker Member
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I have a 3 year old AO Smith ProMax 50 gal water heater. I have smelly water and would like to know where in the water heater do I pour the pints of hydrogen peroxide? I thought I would use two quarts-is that enough?
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| Posted: Mon May 31st, 2010 04:32 pm |
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2nd Post |
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eleent Member 
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Hello: It's probably easiest to put peroxide in the hot outlet, particularly if there is a flex connector you can undo. You'll need to relieve pressure and drain a little water from the bottom. Two quarts sounds like a LOT  Two pints should do it.Yours, Larry
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| Posted: Mon Jul 5th, 2010 09:08 pm |
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3rd Post |
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Antonia Member
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I read about the hydrogen peroxide fix as well, but was not understanding how it will help as more water continues to come into the tank therefore making more smell. As a family of 4 I think we go through a lot of hot water, so the heater is not sitting a lot. Last edited on Tue Jul 6th, 2010 12:20 am by Antonia |
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| Posted: Tue Jul 6th, 2010 04:34 am |
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4th Post |
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eleent Member
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Hello: The bacteria that cause odor in heaters are anerobic. That is, they don't like oxygen. Hydrogen peroxide is essentially oxygenated water, so putting it in the tank is something the anerobic bacteria find distasteful  It might be good for you to have a look at the anode from your heater. If it has black goo on it or is smelly, the heater is certainly a source of odor. If not, it may be from some other cause, such as a bad drain or sink overflow. As you say, high hot water use usually prevents odor from being a problem in the heater. If you have a very large heater or multiple tanks, the problem is less unlikely  Yours, Larry
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| Posted: Tue Jul 6th, 2010 03:08 pm |
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5th Post |
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Antonia Member
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The 40 gal. water heater is only about 1 year old. We do have a softener and the smell is in the hot faucets, not the cold. If I treat it with hydrogen peroxide, won't the smell just come back when that tankful is emptied out and more water comes in? So in other words I just keep treating as the problem returns, however frequently that may happen? Thanks for your help.
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| Posted: Tue Jul 6th, 2010 04:20 pm |
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6th Post |
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eleent Member
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Hello: Things are beginning to add up, but to clarify, it's what's happening in the heater that creates the odor. Change conditions there and you can improve life. Softening usually speeds up anode consumption which creates more hydrogen gas. The bacteria LOVE hydrogen gas. So, try softening less and add hydrogen peroxide. The bacteria will find the inside of the heater less habitable  The bacteria are introduced to the tank via the cold incoming water, but if the numbers of bacteria were high, you would smell the cold water also. It's a fixable problem with proper one time treatment and usage. Yours, Larry ps. Have a look through "tanklets" for more reading on this.
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