Frog Serene® Mineral Cartridge Replacement 3 Pack with Bonus HotTubMax Oil Absorbing Scum Sponge (Flower)
- CONTAINS: 3 Frog Serene Mineral Cartridge Replacement and a GIFT 1 HotTubMax Oil Absorbing Sponge (Flower).
- QUALITY: The Frog Serene Floating System Fresh Mineral Water hot tub system utilizes mineral and bromine cartridges designed to destroy bacteria, and improve the overall quality of hot tub water..
- CONVENIENT: The minerals last up to four full months, while the bromine can be dialed in to meet your precise needs, usually about 3-4 weeks per cartridge. Just snap the 3 cartridges into the floating cap and relax!.
- USES: Refill for use in either the spa frog floating system, or for users of the spa frog inline system..