How much water to put in a softener brine tank?

The amount of water you put in a water softener brine tank depends on the size of the tank and the amount of salt you are adding. Generally, for a standard 42-pound salt bag, you will need to add approximately 15 gallons of water to the tank. For larger tanks, you will need to adjust the water level accordingly. It is important to follow the manufacturer's instructions for your specific water softener to ensure proper operation.