Spa FROG Serene Mineral Cartridge

Spa FROG Serene Mineral Cartridge Pre-filled Mineral Hot Tub Sanitizer. Replace ~3-4 months depending on spa usage. This product is meant to be used together with the Spa Frog Serene Bromine Cartridge. Bromine Cartridge not included. FROG Serene keeps your hot tub clean while eliminating the work and the guesswork. Instead of spooning in bromine daily, you simply replace a pre-filled cartridge about once a month. FROG Serene works by killing bacteria in two ways with sanitizing minerals and a very low level of bromine. The resulting Fresh Mineral Water® has a completely different quality that provides the serene feeling you’re looking for. Lower your bromine or chlorine use by up to 50%* with FROG minerals Soft feeling water that’s easier on skin, swimsuits and spa surfaces Just set it and forget it for weeks at a time What size hot tub will FROG Serene work in?Hot tubs 150 to 600 are perfect for FROG Serene. How does FROG Serene compare to other bromine floaters or using