Frog Serene Cartridge Kit
Brand: Frog
The Frog Serene Chemical Bundle includes the supplies you need for a full season or more of fresh, pure mineral water for your hot tub or swim spa. This set of four cartridges refills the Serene In-Line System or the Serene Floating System. These systems were previously known as the Spa Frog In-Line Sanitizing System or the Spa Frog Floating System. The size, quality, and formulation have not changed. All that has changed is the addition of the brand name "Serene." Please note that these are genuine, King Technology brand refills. You must already have the green floating frog or an inline-dispenser in your hot tub.
GENUINE | These are genuine, name-brand King Technology Serene refills
LONG-LASTING | Get clean, soft, clear water for more than three whole months with these slow-dissolving mineral and bromine cartridges
FRESH | Fresh mineral water is clean and sanitized without a heavy bromamine or chlorine smell