Hi, I would like to pick your collective brains on water softeners and use with instant boiling water taps.  We are on the Isle of Wight with "hard" water (107 Ca mg/l) and are looking to install either a Harveys or Kinetico softener.  We are also looking at the Quooker Flex Pro3 instant boiling water tap which provides a mixer function from the hot water cylinder and cold mains and an instant boiling water function from a 3 litre vaccum tank, again fed from the cold mains.  We are plumbing the