FROG Serene® (Bromine) Cartridge - Purple 7.1 oz - 33% More Bromine Compared to Yellow Cartridge Oxidizer as well as the Streamline

as well as the Streamline Pool®:

The FROG Maintain® Non-Chlorine Shock 16 oz works exclusively with the FROG @ease Floating Sanitizing System for Swim Spas

The FreeFlow® Spas 25 Sq Ft

Height: 6 5/8" (not including bottom threaded portion)

This filter fits the following Endless Pools Swim Spa models:

FROG Serene® (Bromine) Cartridge - Purple 7.1 oz - 33% More Bromine Compared to Yellow Cartridge Oxidizer as well as the StreamlineThe FROG Serene (Bromine) Cartridge is for use in the Serene In Line System for hot tubs and spas. This purple bromine cartridge contains 33% more bromine than the standard yellow bromine cartridge. Size: 7. 1 oz The Serene (Bromine) cartridge is the active sanitizer in this system. Use in combination with the FROG blue Mineral cartridge, found here. Not sure how to maintain or start up your hot tub on this system? Download the FROG Serene (bromine)