I just had my water tested by Leslie's and they found a calcium level of around 400 ppm. I then went home and retested with my K2006 kit and found a reading of around 600ppm. I've heard that Texas has very hard water but I wasn't sure if either of those numbers were way out of line. If they indeed are, how would I go about reducing my hardness without effecting anything else? My chemistry is very good apart from the hardness. Thanks!