Thx again CarlD, You guys porbably do know because you were there once but this place is a priceless tool. I remember 3 weeks ago just reading posts to try to diagnose in my head what was wrong with chemical readings in hopes to put the knowledge to good use. Once I get good at taking care of my own pool I would like to do AGP's on the side as there aren't many people who service them around here. Once again, Thx for the knowledge and support. I am sure I will be asking plenty of questions in the future......