Janet, I appreciate all the help I can get, trust me!! Okay, I need more advice from anyone? I tested my pool today and retested it to make sure. First of all this is a dumb question for you pros, but I want to make sure. When testing cholrine levels and you have all the drops in, to multiply, I have been multiplying either X 0.2 if using 25ml. or x 0.5 if using 10 ml., that is correct isn't it. I don't multiply x the 10 ml or 25 ml? I am sure I don't, but need to make sure! Anyhow, today I got FC levels as between 11 and 12.5, I know that is a fluctuation, but that is what I got when testing again. I could NOT get a CC reading at all! It was clear and colorless! PH was 7.5, and Alkalinity was the same as the PH was too, reading at 130. Thanks in advance. Oh, sorry, prelimanary, 25,000 gallon 20x40 vinyl in-ground, changing from Baq! Water is crystal clear!