I have the Taylor k2006 test kit and I'm having trouble with the CYA testing. Every time I try to test the water I can't get it to be cloudy enough to make the black dot disappear, even though I took it to Pinch A Penny and they say its 60ppm. I know the pool store tests are not always the best as they are always trying to sell you chemicals (ex. my salt level is about 400ppm less than it says on my SWG and manually tested with the Taylor test kit). What could I be doing wrong?