What kind of places did you try? My understanding is it's used to lower cholrine in large commerical pools. In other words it's not likely to be carried by the sort of shop that caters to home pool owners.
yes the larger commercial ones carry it but they won't sell it to me, and the regular pool suppy places either dont' have it or have no idea what i'm talking about. I've also been calling pet supply stores since its also used in treating aquariums and ponds, but still no luck...at least locally. I can always order it, but I'm trying not to have to pay that $10+ shipping charge.
so go and apply for one. don't do any business and just fill out the form every quarter and no tax to report. Start at the county court house and get an assumed name cert. That way you can cash checks at the bank as Silverpixels5 when you open your checking acct. Show a loss 5 out of 7 years on your income tax. Life is sweet.
this information is worth what you have paid for it. Nothing.