Spa Frog @ease Replacement Cartridges

3 pack

• Low-chlorine spa sanitizing system maintains a consistent 0.5 – 1.0 ppm free chlorine level at all times
• Minerals work to make water softer, gentler and conditioned
• Shock only once a month and use up to 75% less chlorine
• Floats in spa water and flips over when empty, indicating the SmartChlor cartridge needs replacing
• Minerals last up to 4 months, SmarChlor cartridges last 3-4 weeks in spas up to 600 gallons