We are very close to starting the build of our IGP. It'll be an approx 15000 gallon gunite pool. We thought we were going to go w/ SWG but are considering going w/ Chlorine (or BBB) now because we may go w/ Travertine coping and deck. Also, I was talking to one of the local pool builder suppliers/wholesaler and he told me that SWG combined w/ our local hard water isn't a good recipe. I know a lot of people in the Austin area have salt and seem to be happy, but I thought I'd get some opinions here. Anybody have any thoughts on this? Our 'hardness' is around 180ppm according to the city water supply report. I haven't ran a test at my house yet.