RS1987
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Posts posted by RS1987
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On 9/1/2017 at 6:13 PM, Nealv9z said:
Actually, mpurcell, I was not especially looking for agreement but I was looking for people who actually tried it and either failed or succeeded. My initial query was "has anyone used it instead of Chlorine or Bromine". From what I surmised from your response, you did neither, as it seems you never tried it. I have been doing a lot of reading on the use of hydrogen peroxide in a hot tub. There are a lot of naysayers and misinformation out there. I try to acquire scientific information from reputable sources. There seems to be enough information out there supporting the fact that h2o2 does disinfect that is why it is used in wounds, for example. David Suzuki, a rather welll known science broadcaster and phd, has the following to say about h202:
"Hydrogen peroxide is simply water with an extra oxygen molecule (H2O2). Unlike chlorine bleach, it breaks down into oxygen and water and is kind to the environment. For most applications, hydrogen peroxide should be diluted to a three per cent concentration, which is how it is usually sold in pharmacies. Store hydrogen peroxide in a dark bottle out of direct sunlight.
On their own, vinegar and hydrogen peroxide are each strong germ killers. Used in combination, they're even better!"
His is not the only article I read, you may also wish to read the Wikipaedia page on h2o2 which also states:
It is used as an oxidizer, bleaching agent and disinfectant.
So, since you gave a negative view of it (I do not know you by reputation but I have no reason to doubt your sincerity) and I see contrary advice from some pretty reputable sources, I decided to try it and, so far, I am very happy. No itching, clear water, residual levels of h2o2 are staying at acceptable levels (meaning it can still do its job) and a kinder treatment
How are you measuring H2O2? Where are you buying 35%?? It is very hazardous!
How much 35% are you adding?It gets diluted to almost nothing in 400 gallons - I can’t imagine you’re adding enough to keep the concentration high enough to kill pathogens. And even a tiny drop of 35% will damage skin tissue- in eyes cause permanent damage.
3% decomposes at a rate of about 0.5%/year when kept away from light at room temp but at higher temp decomposes faster.
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On 11/6/2012 at 11:53 AM, studmaster said:
Using Magnesum Chloride would be about 1/20th the cost of Epsom Salts, and it appears as it's better absorbed transdermally. Sourcing it locally is a bit of a challenge though.
I’m wondering same things- how much MgSO4 and also MgCl2 is equivalent to CaCl2 for hardness? Would test strips that are used to indicate Ca hardness levels also indicate Mg? One thing about MgCl2 transdermal absorptivity - how would one know if too much Mg was absorbed - I sit in tub for 15 - 25 min nightly. And does MgSO4 also absorb transdermally and to what extent? It is difficult to move most compounds across the skin barrier which is why there are so few transdermal patches in general - most compounds need a specific carrier, like a specific alcohol. How do you know MgCl2 easily passes transdermally as an aqueous solution?
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On 11/6/2012 at 7:00 PM, chem geek said:
One thing I can think of at the very high thousands of ppm level is that this is similar to having very high salt levels in terms of conductivity and therefore potential metal corrosion. Though normally TDS isn't something of concern, if you intentionally increase it to such very high levels, then that is something to worry about, especially for corrosion.
But why wouldn’t CaCl2 also corrode? I thought the point of keeping it high was to prevent metal pipes from leaching into the water - we have very soft water and end up adding a lot of CaCl2 to increase Ca levels to proper hardness level, ~400 ppm. I think I’m confused about adding enough MgCl2 or MgSO4 to get 6666 ppm - why are you saying this high? I too would like to use Mg salts in place of CaCl2 to raise hardness level for Mg salts health benefits- how many moles of which Mg salts are equivalent in hardness to CaCl2 - ie, how is “hardness “ determined/calculated? I have a 300 gal tub - would Ca hardness test strips work the same for Mg? Those are what I use to determine proper Ca levels.
Cuzn Disk For Spa Sanitation?
in Portable Hot Tubs & Spas
Posted
We have been using CuZn for a few years in our 300 gallon, Hot Springs tub that we bought new in 1997 (plus 15 g potassium monopersulfate salt weekly and continuous ozonation). This product seems to work great - we have not used halogens in over ten years, my wife and I use the tub every night, and have never been ill, and the water looks perfect. I replace the CuZn 2x year when changing the water (we do not use tub June/July/August). What I want to know is exactly how the CuZn works - ie, exactly what are all the electrochemical, aqueous, biochemical and any other reactions going on that the CuZn takes part in - all balanced reactions and products, in as much detail as possible? My son and I are both chemists, but have little idea what is going on. Apparently the ozone and monopersulfate salt do not damage the CuZn matrix, but chlorine does. I have emailed the company asking this but no answers. Thanks in advance.