Just finished my new pool in Corona, California before Christmas. Just wanted to say thank you for all the information. all my chemicals are in line thanks to the tfp method. Its funny how you read on here about pool service people and pool stores and still hope you will have a different experience. Pool guy (start up tec) told me today on his last visit the Clorox sitting by the pool was bad for pools because of all the extra chemicals in it, and I should buy the chlorine from a pool store LOL. Thanks for all the sound advice.