Frog @Ease Replacement SmartChlor Chlorine Cartridge - 3 Pack

King Technology's Spa Frog @ease Floating SmartChlor Cartridges helps to maintain a steady presence of chlorine in your spa, keeping your water sanitized and safe. For use only with the FROG® @ease® Floating Sanitizing System. The unique SmartChlor® Technology slowly releases over 3-4 weeks. When the system flips over it is time to replace. Use SmartChlor cartridges with Spa Frog @ease Mineral Cartridges to lower Chlorine requirements, and strong Chlorine odors, and increase the lifetime of your hot tub surface.  *Designed for use with Spa Frog @ease Mineral System - Mineral Cartridge not included  Features: Low-chlorine spa sanitizing cartridge maintains a consistent 0.5 – 1.0 ppm free chlorine level at all times (pair with Frog Spa @ease Mineral Cartridges for best results) Shock only once a month and use up to 75% less chlorine Prevents bathing suit fabric fading Slows wear on spa surfaces and plumbing Floats in spa water and flips over when empty, indicating the SmartChlor cartrid