Thanks. In other words be patient and don't try to get perfect water overnight, lol. Anyway when you mentioned the sequestering agent that raised my eyebrows. The company that applied the pebbletech is having me add a sequestering agent once a week from a gallon jug that they gave me (8 oz. per 10k gallons weekly). It's active ingredient is phosphonic acid (I may have spelled that wrong, I'm going from memory). They tell me I need to do this forever and buy the sequestrant from them. My plan was to use up the gallon and quit there.