As my user name implies, I didn't know jack about pools until 10 months ago when I bought a house with one. Everything I know about pools I have googled or have lurked it here. I am posting a new thread about my liner staining issue, not sure which category to put it in but y'all will see it. So far I have done a lot to my pool. I have replaced an old centurion triton pump with a Hayward variable speed programmable. By the way, I did all of this myself. I don't believe in paying someone for something i can read about and learn how to do. I have replaced the de filter grids, replaced some 3 way diverter valves, replaced some leaking plumbing and valves, and a few small things not worth mentioning. So, you can see I am a hands on kind of guy.