I just opened my pool today to crystal clear water, I just wanted to say thank you for this site and all the info. I am still a rookie but this site really helps a person get a handle on taking care of your own pool. My fc was 3 and my fc was 0 I added 121 oz. of 8.25% bleach just to be safe. I also vacuumed . For all you new comers such as me you will not get any better advice anywhere on how to maintain your pool . Thanks again TFP.