FROG Serene Hot Tub Mineral & Bromine Cartridge Set – 1 Mineral, 4 Bromine, 600 Gallons

Features:

• FROG Serene replacement cartridges provide extended hot tub water care, compatible with the Floating or In-Line System.
• Complete sanitizing system using low-level bromine and FROG Sanitizing Minerals for effective bacteria control.
• Reduces bromine usage by up to 50%*. Includes 4 Bromine cartridges that last up to 4 weeks, suitable for 600-gallon hot tubs.
• Includes 1 FROG Sanitizing Mineral Cartridge lasting 4 months, enhancing water softness and comfort.
• Prefilled cartridges eliminate the need for handling or measuring bromine, ensuring a mess-free and hassle-free experience.