FreshWater Salt System Cartridge for Caldera and Hot Spring Hot Tubs (Single Pack)


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The FreshWater Salt System Cartridge for Caldera and Hot Spring Hot Tubs (Single Pack) is a replacement chlorine generating cartridge exclusively for the FreshWater System. It includes one replacement filter. The single salt cartridge lasts approximately 4 months.

The convenient, maintenance-free titanium cartridge is easy to replace in just a few seconds – no tools required.

The FreshWater Salt System is an affordable and easy-to-use water care system that keeps spa water clean and clear while reducing chemical usage.

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Caldera’s innovative FreshWater Salt System takes the worry out of water care. This revolutionary system reduces hassle while providing improved water quality. What does this mean for you? Simply put, it means less time spent maintaining your hot tub and more time enjoying it. We like the think of it as a win-win!

The titanium cartridge creates chlorine from salt and gently releases it into the water keeping clean and ready to use with less work. Reduced chemical use extends water life and helps it feel soft and natural, and is incredibly easy to use. The cartridge is disposable and easy to replace every 4 months (no tools required).

Chlorine generating cartridges are also available in a 3-pack.

FreshWater Salt System Benefits

  • Easy-to-follow, on-screen instructions
  • Gentle on eyes and skin
  • Fewer chemicals means no harsh odors
  • Better water, less hassle
  • Water lasts up to a full year* when properly maintained
  • Cartridges are quick and easy to replace
  • Simple water care means more time enjoying your spa
  • Automatic chlorine generation saves time maintaining your spa
  • Works with both Hot Spring and Caldera hot tubs

*Many factors affect the life of spa water, such as bather load and water chemistry. When these factors are accounted for and the spa is properly maintained, the FreshWater Salt System will keep water clean and clear for a full year.

This FreshWater Salt System is available on all 2019 and newer Caldera Utopia ® and Paradise ® Series Spas. Available only in the U.S






Product Type


Sanitizer System

FreshWater Salt


Generates sanitizers to keep the spa water fresh, clear and odor-free


1 maintenance-free titanium cartridge


Keep spa water clean and clear with less harsh chemicals