Use this Spa Frog Mineral Cartridge with the Spa Frog Bromine Cartridge in either the in-line Spa System or the Floating Spa System. When the Mineral Cartridge is used as directed, you can reduce bromine levels up to 50% to 80% while maintaining odor free, crystal clear water easily and effectively.

Cartridges are easily adjusted to meet the sanitising needs of any size Hot Tub or Spa. Replace the mineral cartridge every 4 months when you drain and refill your spa.

SPA FROG® In-Line System

The SPA FROG® In-Line System, with its patented design, is built right into the spa using the same replaceable mineral and bromine cartridges as the SPA FROG® Floating System. Simply open the cap, pull up the holder and snap in the cartridges. Marquis Spas, Caldera Spas & Emerald Spas are just a few brands that use the SPA FROG® In-Line System.