I presume you are on a well.
You want more salt, which means you want more brine refill. You may also need more frequent regen. How often do you regen?
You want to identify the controller or post a picture so that somebody can identify the controller.
You want to say what the diameter and height of your tank is, and identify what part of the tank you are measuring up to. How much resin did you put in?
You want to give clues as how much water you use by identifying the number of people and number of bathrooms.
You will want to treat your system periodically with Super Iron-Out or special treatment solution.
Is there anything about the water that bothers you besides hardness?