The HOTSPRING HOT TUB SPA Mineral Ion Cartridge Filter Stick (2 Pack) is used to sanitize water, reduce scum, and maintain clarity in hot tubs up to 1,000 gallons. By releasing silver ions, it kills bacteria and algae, allowing for up to 50% less chlorine or bromine usage. 
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Key Features and Benefits:
Water Sanitation: Utilizes silver ion technology to destroy bacteria and algae, keeping water fresh and clean.
Reduced Chemical Usage: Decreases the amount of chlorine or bromine required for maintenance.
Improved Water Quality: Prevents cloudy water and makes the spa water softer and more comfortable.
Easy Maintenance: Lasts up to 4 months per stick and is installed by placing it inside the existing filter cartridge.
Compatibility: Designed to fit most hot tub filter cartridges, especially for Hot Spring or Limelight spas.