Thanks to a Pool Store experience I had to drain and refill my pool less than a month into the pool season. When I refilled my pool I did it with the knowledge that these people were behind me because I found them before I got to that point. It's been about 3 weeks now and I've used the advice that these fine people have given me and I've done things the tfp way and my pool is as beautiful as it can be! . I haven't stepped foot in a pool store since I started this and I probably won't unless I need a floaty that I can't find at Walmart!