I have been lurking on this website for the last 4 months (while I have been interviewing / meeting with 7 different pool builders). I have learned SO much through this site! It has given me some confidence when meeting with pool builders. I have one question and wasn't sure if it was worthy (or just stupid) to ask on the forum. I have read many of the threads dealing with proper pool chemistry. Several of them mention adding bleach. When I have mentioned this to potential builders, they look at me like I'm crazy! I'm in North Texas and the pool builders say this must be something that is done "up north". Can you give me any insight? We are looking to choose our builder in the next week and I want to be sure we are prepared as it relates to maintaining our dream.