Tired of constantly checking and balancing your spa water? The FROG @ease In-Line SmartChlor Cartridge 3-Pack is here to make your life easier - and your hot tub cleaner. Designed for use with the FROG @ease system, these cartridges take the guesswork out of spa care by self-regulating chlorine levels for weeks at a time. If you’re searching for a FROG hot tub cartridge that delivers consistent performance, look no further. The SmartChlor formula is unique and only releases chlorine when your water needs it. That means no peaks, no strong odors, and no daily maintenance. Just clean, clear, silky-smooth water. Pair it with a FROG Ease mineral cartridge for hot tubs, and you’ll use up to 75% less chlorine compared to traditional systems. The result? A spa that feels better, smells better, and requires way less effort . Looking to stock up? The FROG Ease in-line SmartChlor cartridge 3-pack offers unbeatable value and convenience. Available now at your local pool and spa store or spa chemical store near me. Make the switch to smarter spa care. Your hot tub - and your skin - will thank you.