I put in a 10000 gal play pool 4 years ago and mainly because of this site have figured out how to keep it from being green. I know pucks are frowned upon around these parts but I have been using those for the last 4 years in conjunction with liquid chlorine for shocking and finally opted to get a salt water generator a few weeks ago to help to fend off constantly increasing CYA levels. Thankful for all of the knowledge you guys put out there for people like me to try to keep our pools clean by ourselves and save a lot of money in the process!