A little confused about my setup...

So, here's my introduction and my pool issue...

My wife and I bought a house here in Northeast Ohio in 2008 and it happened to come with a 15' round swimming pool. I've been doing pretty well opening and closing the pool and (for the most part) keeping it maintained pretty well. Well, over the last couple years, I've been asking myself several questions about the pool that maybe you guys can help me answer. I think I should make a new topic in a more appropriate forum now that I've introduced myself. I'll post a link as soon as I get that one started. I look forward to talking with all of you pool-gurus!

Thanks!