Hi. I am new to the board. I am going to have a new IGP w/spa installed. I might be going with A&S, and I would like to know if anyone used them if so how was your experience? The guy is coming back tuesday with plans. I will post them Tuesday to get your responses/ideas. He mentioned an ozone generator to use up to 85% chlorine. I have read here that they really arent that good. I am trying to steer away from salt as it will corrode concrete over time and I want to avoid trouble with the coping, etc where the concrete will be thin. Is the Spa a good idea? I am sure I will have more questions, AND YES I do search for previous posts before posting. Over time I have become ALL to familiar with the "LOOK HERE" type answers to questions. Thanks guys/ Gals.