With the Covid 19 pandemic, bleach has become an elusive purchase. I have been using trouble free pool past seven years and have had excellent results with bleach. However, I am no longer able to find enough bleach to work my pool. My first option would be to use Sams Club chemicals. Two questions: 1) Will TFP testing work with these chemicals (In the past, the cyanuric acid buildup seems to have clouded the water; and 2) any suggestions other than Sams products?