New member here, from Dallas, TX. I found this forum a couple weeks ago, after my wife and I had decided to drain/refill our swampy green pool. I have been searching and reading posts ever since. This place is an invaluable wealth of knowledge! I have since decided to switch over to the BBB method, and just ordered my TF-100 testing kit, yesterday. A huge thank you to all of the contributing members who have made this place what it is.