Opened pool and water was clean but cloudy. Vacuumed and shocked thursday nite with calcium hyprochlorite 73%. Today pool looks great. Getting my feet wet with the TF-100, my results are: FC 1, CC 2-1/2, PH 7.5, T/A 150, CH 350, Temp 70 degrees, CYA is an issue. If I wait until the black dot disappears, the tube is full. If I wait until the dot starts to change from black to gray, the # is 60. If I wait till its somewhat gone , the # is 30. What gives. Now the question is: do I go onto the pool calculator with those numbers and do as told ? I previously used 3" trichlor pucks and filled my chlorinator. I need to know how much liquid chlorine or bleach to use on a daily basis. I get full sun but usually put a solar cover on until I get the pool up to 80+ degrees.