FROG® Serene Bromine Cartridge (Yellow) | Spa Refill Electric_Fireplace_Accessory If it senses that water

If it senses that water flow is too low or absent (often due to low water level

concentrated liquid enzyme that makes spa maintenance noticeably less work

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Hopper size: 197 x 224 x 216mm (7

Viking Spas® 80103 2" Split Nut w/ Screw

FROG® Serene Bromine Cartridge (Yellow) | Spa Refill Electric_Fireplace_Accessory If it senses that waterThe 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