Simplify spa & hot tub chemicals maintenance by reducing sanitizer demand!

• Helps control bacteria, prevent algae and improve filter efficiency, drastically reducing the amount of harsh spa chemicals needed to maintain a clean and healthy spa.
  
• Formulated for use with bromine, chlorine, ozone and non-chlorine shock.
  
• Fits most filters, and lasts up to four months in spas up to 1000 gallons.