Spa Frog Serene in-line cartridges makes hot tub care even easier, and your hot tub experience even more luxurious. With Frog Serene, there’s no measuring out the right amount or constantly adding chemicals. You simply replace your Frog Serene cartridges when used up and enjoy weeks of Fresh Mineral Water®. That’s what Frog Serene provides with minerals and a low level of bromine that makes water feel softer and look crystal clear.

This kit contains:

• Four (4) Serene Bromine Cartridges. (each lasts up to one (1) Month depending upon spa usage and settings).
• One (1) Serene Mineral Cartridge (Lasts up to four (4) Months depending upon spa usage and setting)
• Four (4) Frog Maintain Non-Chlorine Maintenance Shock (used at startup and once a month after that)
• One (1) Bottle of Freshwater 5-way Test Strips (30 Test Strips)

Benefits include:

• Kills bacteria with up to 50% less bromine than ordinary systems
• Bromine is less impacted by pH swings ensuring sanitizing effectiveness
• It’s so easy to use. You only shock the hot tub with a Frog Maintain Packet once a month
• The Mineral Cartridge lasts 3-4 months in between your hot tub drain and refills
• The Serene Bromine Cartridge lasts up to 1 month based on usage and settings.
• Prevents fading swimwear

Use these products with Freshwater maintenance products to adjust your spa’s pH, Alkalinity, and calcium hardness levels.