FROG® @ease SmartChlor 3-Pack | Sundance Spas 780/880/980

The FROG® @ease SmartChlor® Cartridges for Sundance Spas (3 Pack) are the genuine refill cartridges for the @ease Sanitizing System custom-designed for Sundance Spas. Each cartridge is the chlorine-generating half of the @ease pair, sized and engineered to fit the Sundance cartridge holder — not the universal floating dispenser, not the Bullfrog floater. This is the Sundance-specific size.

For most spa owners, SmartChlor® cartridges are the most frequently replaced piece of the @ease system — each lasting about 3–4 weeks of normal use. A 3-pack gives you roughly three months of sanitizing on the shelf, which is the cheapest, easiest way to keep water care running smoothly without scrambling for a refill mid-month.

SmartChlor® is a unique chlorine compound that works only with FROG® minerals. It self-regulates — automatically delivering more free chlorine when your water demands it, and pausing when the level is right. Paired with the FROG @ease Mineral Cartridge, the result is up to 75% less chlorine than traditional water care, with no harsh chlorine smell, no daily dosing, and no weekly shocking. Swimsuit colors stay bright and your spa surfaces hold their finish longer.