Quote Originally Posted by chem geek View Post
FYI. The procedure is in this PDF file (OXYplus™ is sodium percarbonate). The dosage was 5 pounds per 10,000 gallons (so 1 pound per 2000 gallons) which is less than the dosage normally recommended for ProTeam® System Support (but the purpose is different here) -- note that this is different than I wrote to Ben earlier since I found a reference to Orenda's instructions. Also, I thought that it was added without the acid and that after the conversion then acid was added to adjust pH as needed.
Thanks Richard, I was looking for Dick Kersey's instructions and couldn't find them! I thought his dosing was half that of Proteams' but could not remember. I had lost contact with him when he moved and started his newest product line selling phosphate removes and enzymes. Remember that this is the same person who gave us the ill fated CYA reducer that does not seem to be on the market anymore. I do know that he recommended adjusting pH after conversion so he is doing it in a high pH environment but I have also personally know of conversions that were successful using the higher dosing and keeping the pH at normal levels. However, the addition of hydantions to the water (Baquacil CDX) certainly is part of the problem here. We know the effect that hydantoins have on bromine (and chlorine for that matter) and it seems that they have a similar effect to stabilize hydrogen peroxide because they are an aldehyde doner (same reason they are used as preservatives in cosmetics and shampoos). If this is the case then a drain and refill might be the only way to solve this problem unless there is some way to break down the hydantion compounds in the water.