FROG Mineral Cartridge - For @ease Smartchlor and Serene In-Line Systems Caldera cold plunge filter The Tylö Brilliant Sauna Bucket

The Tylö Brilliant Sauna Bucket is constructed from anodized aluminum with a birch/aspen wood handle for longevity and strength

Freshwater™ Salt System Replacement Cartridge (Single) for Caldera and Hot Spring hot tubs that use the in-line Freshwater salt system

Filter Specs:35 Sq Ft

The Freshwater™ XL Vanishing Act Calcium Remover bag removes excess calcium hardness from hot tub water

blue top filter are interchangeable

FROG Mineral Cartridge - For @ease Smartchlor and Serene In-Line Systems Caldera cold plunge filter The Tylö Brilliant Sauna BucketThe FROG Mineral Cartridge is the blue cartridge that is used in both FROG @Ease SmartChlor (Chlorine) and Serene (Bromine) In Line Systems. The FROG blue Mineral Cartridge is replaced every 4 months. The FROG system will not work correctly if the blue mineral cartridge is more than 4 months old. For use in: FROG @ease SmartChlor in line system FROG Serene (Bromine) in line system Please Note: FROG makes blue mineral cartridges that say @ease and