Hi all, brand new pool owner here. Absolutely overwhelmed. Just had a 21' round 52" installed with a catridge filter. Had plain water delivered as I have a well. Your site saved me from that Pristine Blue stuff, I went in and told them" no thanks" point me to the liquid chrlorine. So now I have one those slow dissolve puck things which adds ?CYA and chlorine,and I added a gallon of chlorine. I have ph up, ph down and some algecide. I will test with the strips I got from store tomorrow and hope for the best until I can order a kit to measure levels. A lot of knowledgeable people on this site and I can't wait to learn!