I have another question related to the above. Does the 5600SXT actually meter the amount of water put into the brine tank? If not, wouldn't this be a chance for the manufacturers to improve upon this process and exactly be able to control the amount of brine used for regeneration? The side effect would be to shorten the whole regeneration cycle. It seems to me that 60 minutes for the brine rinse is much more than what is really needed.
Just thinking out loud.