FROG® Serene Bromine Cartridge (Yellow) | Spa Refill Brand_ULTCOVER Backwash filter according to manufacturers

Backwash filter according to manufacturers directions

Please consult your stove’s user manual for more specific instructions on cleaning

Escape and enjoy

Phosphates enter from source water

Treated with Myclex

FROG® Serene Bromine Cartridge (Yellow) | Spa Refill Brand_ULTCOVER Backwash filter according to manufacturersThe 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