Greetings everyone, I'm a first-time pool owner trying to figure it all out here in Arizona. So far, I've been using Leslie's with mixed feelings. I finally came here today after being told that my nitrate level was to the point that the pool has to be drained. I did have a pool guy, but having proven himself to be completely unreliable, I decided to take care of business myself. So, here I am. Right now, my water is crystal clear, but being told that I have zero chlorine (due to nitrates). I'm about to research and order my own test kit, and spend some quality time on this site to determine the next course of action. Thank you all in advance for your willingness to share your knowledge!