Keep hot tub water care simple with the FROG Serene Cartridge Kit, a convenient replacement package containing 1 FROG Serene Mineral Cartridge and 3 FROG Serene Bromine Cartridges. Designed for FROG Serene Floating and In-Line Systems, this kit combines FROG’s sanitizing minerals with pre-filled bromine cartridges for cleaner, clearer, softer-feeling spa water with less hands-on chemical maintenance.
The FROG Serene system attacks bacteria in two ways. The Mineral Cartridge works together with bromine, allowing the system to use up to 50% less bromine than a traditional bromine-only hot tub. Lower bromine use can mean less chemical odor while maintaining the clean, inviting water you want when it is time to relax.
Convenience is built into the cartridge design. Instead of regularly measuring and handling loose bromine, FROG Serene uses pre-filled, adjustable Bromine Cartridges. Each bromine cartridge typically lasts 2–4 weeks, while the Mineral Cartridge lasts four months or until the hot tub is drained and refilled. Actual bromine cartridge life varies based on spa size, usage and the cartridge setting.
Why Choose the FROG Serene Cartridge Kit?
Complete replacement kit: Includes 1 Mineral Cartridge and 3 Bromine Cartridges in one convenient package.
Up to 50% less bromine: FROG sanitizing minerals work with bromine to help maintain clean spa water at a lower bromine level.
No measuring bromine: Pre-filled cartridges make routine sanitizer replacement quick and easy.
Long-lasting mineral protection: The Mineral Cartridge lasts four months or until you drain and refill your spa.
Adjustable bromine delivery: Bromine Cartridges can be adjusted to match your hot tub’s needs and typically last 2–4 weeks each.
Cleaner, softer-feeling water: FROG Serene is designed to provide fresh mineral water with less bromine odor and a softer feel on skin, swimsuits and spa surfaces.
Made for FROG Serene systems: Compatible with FROG Serene Floating and FROG Serene In-Line Systems.
For hot tub owners already using FROG Serene, this 1 Mineral / 3 Bromine Cartridge Kit is an easy way to stock up on the essential replacement cartridges that keep the system working as intended.
