Quote Originally Posted by cripwick
how do you know how much bleach ro add? i bought 6 way test kit at walmart still hard to read high cl levels. what makes my bad cl reading so high? thanks for help
brian
Hmmmm....that's pretty hard to read but if I "cipher" on it, I think you are asking how to read Cl levels higher than 5.

Dilute your pool water by half with distilled water and test. If you get 4ppm, then your Cl is really 8. Dilute by thirds if you need to go higher. This method is VERY innaccurate but may work for your purposes.

Search for "bleachcalc" on this forum and download it. It'll tell you how much Clorox to add.