FROG® Serene Cartridge Kit | 3 Bromine + 1 Mineral
The FROG® Serene Cartridge Kit is the multi-pack refill for FROG's bromine-based Serene system — three bromine cartridges and one mineral cartridge, giving you approximately four months of water care supply for a single hot tub. It works with both the FROG Serene Floating System (the dispenser that floats in your spa) and the factory-installed FROG In-Line System built into many hot tubs.
The math is straightforward. Each Serene bromine cartridge lasts 2–4 weeks; the mineral cartridge lasts up to 4 months. So one mineral cartridge plus three bromine cartridges is roughly four months of supply for a typical hot tub — perfectly aligned with the mineral cartridge's lifespan. Buying this kit costs significantly less than buying the cartridges individually, which is exactly the point.
The chemistry itself is the proven FROG® Serene formula: FROG® minerals plus Time Released Bromine Technology work together to sanitize your water two ways. The minerals condition the water and provide a first line of defense against bacteria, which means the bromine cartridge can run on a low, steady release — typically up to 50% less bromine than a non-mineral bromine program. The result is soft water with much less odor, less wear on swimwear, and no daily spooning of bromine tabs into a floater.
FROG®
The FROG® Serene Cartridge Kit is the multi-pack refill for FROG's bromine-based Serene system — three bromine cartridges and one mineral cartridge, giving you approximately four months of water care supply for a single hot tub. It works with both the FROG Serene Floating System (the dispenser that floats in your spa) and the factory-installed FROG In-Line System built into many hot tubs.
The math is straightforward. Each Serene bromine cartridge lasts 2–4 weeks; the mineral cartridge lasts up to 4 months. So one mineral cartridge plus three bromine cartridges is roughly four months of supply for a typical hot tub — perfectly aligned with the mineral cartridge's lifespan. Buying this kit costs significantly less than buying the cartridges individually, which is exactly the point.
The chemistry itself is the proven FROG® Serene formula: FROG® minerals plus Time Released Bromine Technology work together to sanitize your water two ways. The minerals condition the water and provide a first line of defense against bacteria, which means the bromine cartridge can run on a low, steady release — typically up to 50% less bromine than a non-mineral bromine program. The result is soft water with much less odor, less wear on swimwear, and no daily spooning of bromine tabs into a floater.
FROG®
Description
The FROG® Serene Cartridge Kit is the multi-pack refill for FROG's bromine-based Serene system — three bromine cartridges and one mineral cartridge, giving you approximately four months of water care supply for a single hot tub. It works with both the FROG Serene Floating System (the dispenser that floats in your spa) and the factory-installed FROG In-Line System built into many hot tubs.
The math is straightforward. Each Serene bromine cartridge lasts 2–4 weeks; the mineral cartridge lasts up to 4 months. So one mineral cartridge plus three bromine cartridges is roughly four months of supply for a typical hot tub — perfectly aligned with the mineral cartridge's lifespan. Buying this kit costs significantly less than buying the cartridges individually, which is exactly the point.
The chemistry itself is the proven FROG® Serene formula: FROG® minerals plus Time Released Bromine Technology work together to sanitize your water two ways. The minerals condition the water and provide a first line of defense against bacteria, which means the bromine cartridge can run on a low, steady release — typically up to 50% less bromine than a non-mineral bromine program. The result is soft water with much less odor, less wear on swimwear, and no daily spooning of bromine tabs into a floater.
FROG®
