5 pack spa frog replacement cartridges, 4 bromine/ 1 mineral
SPA FROG CARTRIDGES INCLUDES: 1 MINERAL CARTRIDGE. 4 BROMINE CARTRIDGES. (EACH LAST BETWEEN 2-4 WEEKS). SPA FROG Mineral Sanitizers are the only mineral systems for spas that work with low levels of bromine for the highest water quality. Mineral and bromine spa care. Cartridges work in the frog floating and in-line systems. Cuts bromine use up to 50%. Cuts maintenance time. Water feels softer with a crystal clear shine. Using less bromine helps reduce odors. Mineral cartridges last for a full 4 months before needing to be replaced. Bromine cartridges last for between 2-4 weeks and take just seconds to replace. (Bromine usage varies depending on spa size and number of spa users. The Spa Frog in-line systems are factory installed in select spas from the following manufacturers: Emerald, Caldera, Leisure Bay spas, Marquis, Morgan, Watkins Hot Spot, Pacific Hot Tubs, and Saratoga.