atthaissem 6 Pack Hot Tub Cartridges, Compatible with Frog Ease Floating System, Ideal for Hot Tubs up to 600 Gallons.

["Compatibility: Replacement Cartrides for Frog Floating System，ideal for hot tubs up to 600 gallons.","A better choice: Includes 6 Cartridges, each lasts up to 3-4 weeks.","Premium Quality: Consistent and stable release reduces the need for manual adjustment and daily checks, allowing you to enjoy continuously clear water and peace of mind.","After-Sales Guarantee: If you encounter any issues while using this product, we provide 24/7 support for you."]