You need salt, but not too much. The brine tank should be about half full. Below that? You risk wasting time. Above that? You risk bridging. Pro tip: add a bag of resin cleaner once a year. It removes iron buildup that makes your water taste like a rusty pipe. It’s like a spa day for your softener.
Also, check the brine hose—the little tube that connects the brine tank to the control head. If it’s kinked or clogged with salt mush, your regeneration won’t work. Blow through it like you’re clearing a straw. If air doesn’t flow, replace it. It’s $5 and ten minutes of your life.
How Do I Fix My Water Softener at David Daigle blog
