FROG Serene Bromine Cartridge (150g)

Bromine cartridge refills for the Spa Frog Floating System (SKU# 00SF1001) or the Spa Frog Inline System (featured in Emerald, Saratoga, Caldera, Marquis, Morgan, Watkins Hot Spot, Pacific Hot Tubs and Leisure Bay spas). Bromine cartridges typically last 2-4 weeks using the Spa Frog systems. When used in conjunction with Spa Frog's mineral cartridge, you can decrease your bromine usage by 50-80%.