Yes!! Try it
"Have had a hot tub for years, and before I found this I was either draining and refilling a lot or just settling for iffy water. No more of that nonsense :))) I have a salt tub and this is now all I need. I kept up with testing levels for a while just out of caution but have since stopped because it has stayed perfect. Bit of wobble in pH first 2 weeks but no sweat"