Standard on Caldera spa models, the FROG system is bromine and mineral-based and is formulated to work effectively in warm water. The system is integrated into the shell of the spa where it works continuously.
How Does It Work?
Rather than measuring out chemicals, you simply replace color-coded cartridges that last for weeks or months. The cartridges have a dial that you adjust depending on how often you use your spa.
The mineral cartridge enhances the effectiveness of the bromine, which allows you to use fewer chemicals.
Bromine is easier on the skin, and the FROG system requires fewer chemicals, making it easy to use your spa as often as you want.