FROG® @ease® In-Line Spa SmartChlor® Sanitizing Cartridges (Pack of 3)

These FROG® @ease® In-Line Spa SmartChlor® Sanitizing Replacement Cartridges are a unique form of chlorine that work only with FROG® minerals in the FROG® @ease® In-Line Spa System. It uses SmartChlor® Technology that creates Fresh Mineral Water® and uses up to 75% less chlorine, with no frustrating yo-yo chlorine levels. Pack includes 3 cartridges Replacement SmartChor® Cartridges for the FROG® @ease® In-Line Spa System SmartChlor® Cartridge lasts up to 3-4 weeks depending on hot tub usage and is recyclable when empty Maintains a consistent 0.5-1.0 ppm free chlorine level at all times which means no faded swimwear and no chlorine smell When the SmartChlor® Cartridge is depleted, the system will flip over as a visual reminder to replace the empty cartridge with a new one Shock your spa only once a month Self-regulates for continuous crystal clear water Easy on hot tub surfaces with less odors No constant monitoring No mixing chemicals EPA registered Single color match for easy readin