I know u said to add 3 gallons of 6% bleach I didn't have any yet but did have a case of s gallons of 10% liquid chlorine. So I added 2 bottles waited an hour tested and the chlorine level was at 3ppm. I then added 2 more bottles waited another hour tested and the test read between 3 & 5 so I guess I'm going to say 4. On my way to the store to grab some old fashioned bleach. Any ideas why my levels aren't going as high as they should.