I recently moved into a new home with a softening system. It has duel tanks, my kitchen and one bath have very soft water but my master bath has harder water. Is there any way to adjust this to have softer water for the shower?
Answer: If there is only one water softening system in the home, and also assuming that all the rooms are piped with softened water, then all the water would be of the same quality. It may be that the master bath you are referring to (for some reason) is supplied with untreated water that does not pass through your water softener. It would appear that the only way to trouble shoot this problem is to trace your piping and make sure that this room (both hot & cold) is on a softened water line.
By the way, some water softeners are equipped with a “bleed valve” that will allow for some hard water to enter the system, and mix with softened water – this allows for some control over the degree of hardness. But this is not the case in your situation, and this adjustment would effect the entire house, not just one room.