I found my answer here. Thanks
http://www.csgnetwork.com/poolchemcalc.html
the bleach used in the calculator is 12%
chem geek
06-26-2007, 02:35 PM
I get 5.48 ppm (that is, about 5.5 ppm) in my spreadsheet, but 5.6 ppm is close enough.
Thanks Richard,
Above site is another one that Chlorine calc does not work in my firefox (other calcs work) but works in IE! I should have looked at your spreadsheet first. I did download it - with your permission!
amir