How do I know when to add more salt to the brine tank?

There is no set time to add in more salt, as everyone's water usage is going to differ. 

Typically when your brine tank is left with about a 40lbs. bag’s worth, add in another 40lbs. on top of this to bring the level back up to 80lbs. 

*We do not recommend letting the level of salt drop below 40lbs. as this can lead to a lack of a proper brine solution needed for the next regeneration.