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