Re: Used Hydrogen Peroxide for Removing Metal Stains - Resul
Made a few additions and corrections to the above "The Hydrogen Peroxide and Ascorbic Acid Method - Operational Guide"
Here they are:
Interesting links on YouTube as to how it works:
http://www.youtube.com/watch?v=qT3mJrmhJHU
http://www.youtube.com/watch?v=iWpfHkWr5DY
and more technical:
http://www.youtube.com/watch?v=zQ3hHTvjgtc
A number of technical papers have noted that HP works better if salt is present. It might be a good idea to add salt even if you do not have a SWG (Salt Water Generator), to increase the effectiveness of this process. The maximum level of salt I would add would be 1200 ppm.
Copper is a pour catalyst in this procedure, unless the pH is in the range 8.5 to 10.0 so it might not help that much with copper staining (very few pools have copper staining issues), or it might take a lot of treatments if the pH is below 8.6. When I have time I will add a section on copper.
If using AA in the process, just before you add the AA, it is a good idea to bypass the heater, particularly if it contains copper, as the AA lowers the pH making it more acidic. Also if using AA remove your cleaner, at the same time, as this to can be damaged by the lower pH. Then open your main drain to allow for maximum flow to the filter.
More Hydrogen Peroxide will not make it more effective so do not waste your money
(But as nothing is certain, it is possible that more will help. Although one article I read stated that if the HP and AA (actually it was another acid) were not completely successful it could be due to the HP being used up by Iron Bacteria first. If then your AA treatment alone was not too successful adding somewhat more HP may help)
9. Three (3) hours after sunrise if you do not have a suction side cleaner,vacuum the pool surfaces, then backwash your filter, then vacuum again and backwash it again in the evening.
Another "Canary in The Coal Mine" is your white skimmer basket, or your white plastic thermometer, these tend to turn brown before metal stains seem to occur on the pool surface.
Made a few additions and corrections to the above "The Hydrogen Peroxide and Ascorbic Acid Method - Operational Guide"
Here they are:
Interesting links on YouTube as to how it works:
http://www.youtube.com/watch?v=qT3mJrmhJHU
http://www.youtube.com/watch?v=iWpfHkWr5DY
and more technical:
http://www.youtube.com/watch?v=zQ3hHTvjgtc
A number of technical papers have noted that HP works better if salt is present. It might be a good idea to add salt even if you do not have a SWG (Salt Water Generator), to increase the effectiveness of this process. The maximum level of salt I would add would be 1200 ppm.
Copper is a pour catalyst in this procedure, unless the pH is in the range 8.5 to 10.0 so it might not help that much with copper staining (very few pools have copper staining issues), or it might take a lot of treatments if the pH is below 8.6. When I have time I will add a section on copper.
If using AA in the process, just before you add the AA, it is a good idea to bypass the heater, particularly if it contains copper, as the AA lowers the pH making it more acidic. Also if using AA remove your cleaner, at the same time, as this to can be damaged by the lower pH. Then open your main drain to allow for maximum flow to the filter.
More Hydrogen Peroxide will not make it more effective so do not waste your money
(But as nothing is certain, it is possible that more will help. Although one article I read stated that if the HP and AA (actually it was another acid) were not completely successful it could be due to the HP being used up by Iron Bacteria first. If then your AA treatment alone was not too successful adding somewhat more HP may help)
9. Three (3) hours after sunrise if you do not have a suction side cleaner,vacuum the pool surfaces, then backwash your filter, then vacuum again and backwash it again in the evening.
Another "Canary in The Coal Mine" is your white skimmer basket, or your white plastic thermometer, these tend to turn brown before metal stains seem to occur on the pool surface.