I did the test with 1/2 distilled water and 1/2 pool water and while the color was not orange, it was still a dark yellow and beyond the scale. I then repeated the test with 1/3 pool water and 2/3 distilled and it was still a darker yellow (but not by too much) than the top of the scale. Since the highest it can measure is 5 ppm, this would mean I have at least 15 ppm (5 x 3) and probably more like 20 ppm?

I will read up on the bucket test and let you know my findings. I will also order one of the suggested testing kits.

Not sure what you mean by what kind of tabs that I am using? Chlorine tabs? I dont put any Cholorine in the pool (other than what is generated by the chlorinator). I have never needed to do a shock or anything.