The test results had copper/iron 1.3. Not sure which it is, but knowing that my mother put the copper chemical, like a goof ball, in it to clean it before I took over the maintenace I would probably be safe in assuming it is the copper. The pool is 13,500 gallons. I went this afternoon and bought 4gallons of bleach, 4 boxes of 20 mule team borax, and 6lbs of baking soda. With my test results what do I add first, how much and when?