i am having problems with my chlorine tests after adding hardness increaser both in my pool and spa, my tests are fine and normal untill i bring up my hardness. after adding hardness increaser my test becomes so cloudy when i add the dpd1a to the test that mt color q tester reads almost off the scale. i have gone back to testing manually with an old testors kit and the chlorine levels are actually just fine however even with the testor kit after adding the powder and the drops instead of the test going clear it just returns to cloudy white and if i leave the test sit after testing the "cloudiness" settles to the bottom in a pile of white something. i have tried letting it settle or filter for days hoping it would clear itself up to no avail, different brands of hardness increaser, shocking the pool, and every other thing i can think of and the only thing that solves the problem is to drain and refill. the water in the pool is crystal clear and all other levels are where they are suppossed to be cant figure this one out help!!!