Frog @Ease Floating Replacement Smartchlor Cartridge 3-Pack For Swimming Pools

Low-chlorine spa sanitizing system maintains a consistent 0.5-1.0 ppm free chlorine level at all timesMinerals work to make water softer, gentler and conditionedShock only once a month and use up to 75% less chlorineFloats in spa water and flips over when empty, indicating the SmartChlor cartridge needs replacingMinerals last up to 4 months, SmarChlor cartridges last 3-4 weeks in spas up to 600 gallonsThe @ease System combines the proven FROG mineral formula for killing bacteria with SmartChlor Technology that maintains a consistently low chlorine level for weeks.Unlike normal chlorine that is used up when you get in, SmartChlor continues to maintain the same level which is up to 75% less than hot tubs using Dichlor (standard hot tub chlorine). That’s why we call it self-regulating. It goes to work when the hot tub needs sanitizing so there are no frustrating yo-yo chlorine levels. This time-released method is also why less shock is needed to maintain the hot tub.When the SmartChlor Cartridge is depleted the system will flip over as a visual reminder to replace the empty cartridge with a new one.