Freshwater™ 5-Way Test Strips for Spas and Hot Tubs fabric cover cleaner protectant The FROG Serene® (Bromine) Cartridge

The FROG Serene® (Bromine) Cartridge is for use in the Serene In-Line or Floating system for hot tubs and spas

You only have to apply this product once at start-up when you change the water in your hot tub

Freshwater™ Salt System Replacement Cartridge (Single) for Caldera and Hot Spring hot tubs that use the in-line Freshwater salt system

Hot Tub Filter has a life expectancy of approximately 1 year if maintained properly

Freshwater™ 5-Way Test Strips for Spas and Hot Tubs fabric cover cleaner protectant The FROG Serene® (Bromine) CartridgeFreshwater 5 Way Spa Test Strips, 50 count These easy to read Freshwater 5 Way Test Strips test for: FCL (free chlorine) Bromine pH Total Alkalinity Calcium Hardness For use in salt systems, granulated chlorine silver ion systems and bromine floater systems.