We opened the pool on Saturday. That's the earliest we've ever been able to do it. To our dismay, the water was disgusting!! Lots of algae. Green water. Yuck. It has never looked so bad. So Bob dumped in a ton of chemicals and we got the filter going. Unfortunately it has some sort of a problem. It works, but there are leaks. My father will figure it out and let me know if we need to buy new parts. Swimming is fun, but pools are expensive, and a lot of work.