Frog Serene Floating Sanitizing System
Product Overview
A dual-chamber mineral and bromine feeder engineered to keep hot tubs clear with half the sanitizer demand.
FROG designed the Serene Floating Sanitizing System to combine a BCDMH bromine cartridge with a silver-based mineral cartridge for hot tubs up to 600 gallons. The mineral component controls bacteria growth so you only need to hold water at 1 to 2 ppm of bromine rather than typical hot tub residual levels. The adjustable feeder eliminates daily manual scooping while keeping skin and eyes comfortable.
Customer Reviews
No reviews yet — bought this one? You'd be first.
Benefits & What Makes It Different
Dual-Action Sanitation
Combines silver minerals and BCDMH bromine to suppress bacteria while cutting chemical usage by up to 50%.
Dial-Adjustable Output
Set the bromine dial between 0 and 6 to steady residual levels between 1 and 2 ppm without manual measuring.
Pre-Filled Replacement Cartridges
Eliminates chemical dust and direct handling; replace the bromine cartridge every 2 to 4 weeks and minerals every 4 months.
Product Details
Bromine Cartridge: 1-Bromo-3-chloro-5,5-dimethylhydantoin (BCDMH) 96.6%; Mineral Cartridge: Elemental Silver 0.5%
For spas up to 600 gal: 1 mineral cartridge every 4 months; 1 bromine cartridge every 2 to 4 weeks, adjusted to maintain 1 to 2 ppm
Compatibility
- Do not mix with trichlor pucks, calcium hypochlorite, or unstabilized liquid pool bleach.
- Compatible with ozone generators and non-chlorine monopersulfate (MPS) shock.
- Maintain standard parameters: pH 7.2–7.6, total alkalinity 80–120 ppm, calcium hardness 200–400 ppm.
When To Use This
Pro Tip
Remove the floating unit and dock it upside down on your spa deck while bathing; this prevents turbulence from forcing excessive bromine dissolution while the hydrotherapy jets run.
Common Questions & Instructions
How do I dial in the FROG Serene Floating System for my hot tub?
Set the blue mineral cartridge wide open to setting 6. Set the yellow bromine cartridge to setting 5 for the first 24 hours, test your water, and adjust dial numbers to stabilize a bromine reading of 1 to 2 ppm.
How long do the FROG Serene replacement cartridges last?
The yellow bromine cartridge lasts between 2 and 4 weeks depending on tub size, bather load, and water temperature. The blue mineral cartridge maintains active bactericide release for 4 full months.
Do I still need to shock hot tub water when using the FROG Serene system?
Yes, you should shock at startup using the included Frog Jump Start or non-chlorine monopersulfate (MPS) once a week to oxidize organics and reactivate bromide ions in the water.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
