FROG @ease SmartChlor 3 Pack for Sundance Spas

The FROG @ease SmartChlor 3 Pack for Sundance Spas includes 3 replacement SmartChlor cartridges customer-fit for Sundance Spas. Mineral cartridges last 3-4 months based on hot tub usage and size. SmartChlor cartridges last 3-4 weeks based on hot tub usage and size.This means for a full 4 month supply, you will need 1 blue mineral cartridge and about 4 silver SmartChlor cartridges. Add the Frog @ease System (1 blue Mineral and 1 silver SmartChlor) to have every piece for a Full 4 month supply! The @ease System uses a time-released method to use less chlorine that requires little maintenance and automatically adjusts output based on usage. Designed to fit spas from the following series: Sundance 780 Sundance 880 Sundance 980 Product style and packaging may vary. Packaging Note: As Jacuzzi Hot Tubs and Sundance Spas are owned by the same manufacturer, this product is the same product as FROG @ease SmartChlor 3 Pack for Jacuzzi Hot Tubs with different external packaging.