Welcome to TFP !
I'll second the TF 100. It's the one I use.
That is an awesome looking pool !!
Here are a couple of good articles from Pool School did get you headed in the right direction. ABC'S Of Pool Water Chemistry How To Chlorinate Your Pool.
If you could add all your pool and equipment info to your sig that will help us better help you.
Any questions you may have don't hesitate to ask.
In order to be able to use that thang, and sort of get a grip of whats happeing with your water, Jeff provided you a couple of links. Thats your starting point on learing why we do what we do!
Hollar if you have any questions or need some help.
Glad to see you are in The Woodlands. We have lived here in The Woodlands for almost 25 years. It's an awesome place but trees and pool don't always mix well. Good Luck.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!