Spa Frog Serene Bromine Cartridge for Hot Tubs (01-14-3824)

Keep your hot tub clean and gentle on skin with the genuine Spa FROG bromine cartridge. It snaps into your Serene floating holder and releases a steady level of bromine for weeks of clear, soft water — and paired with FROG minerals, it does the job with less bromine.

• Steady bromine sanitation for clean, clear spa water
• Works with FROG minerals to use less bromine overall
• Water feels softer with no harsh chemical smell
• Snaps into the Spa Frog / Serene floating system

Specifications