FROG® Serene Bromine Cartridge (Yellow) | Spa Refill Type_Control use the wrong kind of

use the wrong kind of salt and you risk impurities that stain surfaces or shorten cell life

and safety of hot tub water by using UV-C light to effectively neutralize harmful microorganisms

For pool owners who already invested in a Pool FROG®  system

Durable Construction: Built to withstand the heat and operational demands of hearth environments

This pillow is a replacement for a corner

FROG® Serene Bromine Cartridge (Yellow) | Spa Refill Type_Control use the wrong kind ofThe FROG Serene Bromine Cartridge is the consumable yellow cartridge for FROG's bromine based Serene system designed for hot tub owners who want the cleaner, gentler water of a mineral and bromine program without the daily fussing of traditional bromine dosing. Each 150g cartridge lasts 2 to 4 weeks depending on spa size and use, releasing bromine at the rate you set with the adjustable dial. This is the standard single cartridge refill what you