I'm not sure what weather is like in your area. We're having one of the coolest August's in memory, so folks aren't interested in pools here. (It was 61 this morning, which is unheard of for Chattanooga in August.)

But if you want to get the water right, you probably better start with a K2006 or at least a HTH 6-way kit, so you can tell where you are.

+ Here are links to the kits we recommend (you can check local availability on the HTH kit, using the Walmart link):
HTH 6-Way Test Kit @ Walmart
Taylor K2006A (3/4 oz bottles) @ Amazon
Taylor K2006C (2 oz bottles) @ Amazon