King Tech 01-14-3812 Spa Frog Serene Mineral Cartridge

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. Refill for use in either the spa frog floating system, or for users of the spa frog inline system Use with companion frog bromine cartridge Spa frog mineral cartridge