Frog Serene Floating Sanitizing System for Hot Tubs – Up to 600 Gallons

Experience the ultimate in low-maintenance hot tub care with the FROG Serene® Floating Sanitizing System (formerly known as Spa FROG). This all-in-one system creates Fresh Mineral Water® in your spa, combining patented mineral technology with a low level of bromine to keep your water crystal clear, silky soft, and odor-free.  

Designed for hot tubs between 150 and 600 gallons, this system eliminates the need for daily manual chemical dosing. Simply snap the pre-filled cartridges into the reusable floating holder and let it go to work.  

Key Features & Benefits

• **Up to 50% Less Bromine: The combination of minerals and bromine kills bacteria in two ways, allowing you to maintain safe water with half the chemical levels of standard systems.  

• Fresh Mineral Water® Experience: Enjoy softer water that is significantly gentler on skin, hair, and swimsuits. Say goodbye to harsh chemical smells and red eyes.  

• “Set and Forget” Maintenance: No more measuring messy powders or liquids every day. The adjustable cartridges provide consistent sanitation for weeks at a time.  

• Smart Design: The unique floating holder can be flipped upside down on a nearby surface when the spa is in use—no mess, no fuss.  

• Complete Start-Up Kit: Includes everything needed to jumpstart your spa maintenance routine immediately.  

What’s Included in the Box

• (1) Green Reusable Floating Holder: The durable housing for your cartridges.

• (1) Serene Mineral Cartridge: Lasts up to 4 months (replace when draining/refilling).  

• (1) Serene Bromine Cartridge: Lasts 2–4 weeks depending on spa usage.  

• (1) FROG Jump Start® Shock: A single-dose packet to set your initial sanitizer level.  

• (1) Bottle of FROG Test Strips: Specifically designed for the low bromine levels used by this system.

This is 1 unit. 

FROG Serene Floating System Manual