Freshwater™ XL Vanishing Act Calcium Remover for Hot Tubs and Spas Freeflow Filter Please Note: FROG makes Serene

Please Note: FROG makes Serene Bromine cartridges in yellow

The Caldera / Hot Spring 50 Sq Ft

granulated bromine

FreeFlow® Spas hot tubs and Endless Pools®

The hot tub industry found that it's a perfect protectant for vinyl hot tub covers

Freshwater™ XL Vanishing Act Calcium Remover for Hot Tubs and Spas Freeflow Filter Please Note: FROG makes SereneThe Freshwater XL Vanishing Act Calcium Remover bag removes excess calcium hardness from hot tub water. In salt systems, the calcium hardness must be between 25 75ppm. Use every time you change your hot tub water. For use with any water care system, including ACE and Freshwater Salt! Did You Know? Use the XL Vanishing Act bag when the calcium hardness level in your fill water is 150ppm or higher.