For those looking for a long term solution to minimize water changes in your cold plunge, we recommend the Sirona™ Simply product line which offers a bromine-free, chlorine-free solution designed to keep water sparkling clean and clear.
The Oxidizer breaks down organic substances such as body oils while the EPA-regulated Sanitizer provides bacteria control and protects against staining and discoloration due to metals.
With regular maintenance, your water can stay fresh for months before needing a change.
Sirona Oxidizer
The liquid oxidizer formula oxidizes organics and keeps water sparkling clear for a fresh, chlorine-free cold plunge.
- Breaks down and removes oils and organics in water using 7.5% stabilized hydrogen peroxide
- Add at start-up, continue adding as needed to prevent buildup of oils and organic materials
- 32 fl. oz.
Sirona Sanitizer
A bromine-free, chlorine-free liquid sanitizer provides excellent bacteria control, is highly stable at elevated temperatures and lasts longer than chlorine or bromine.
- Add at start-up, test and use as needed to prevent bacteria from returning
- 16 fl. oz.
Sirona Test Strips
Test water for Sirona Sanitizer, pH, total alkalinity and calcium hardness.
- 25 test strips for quick, accurate results in seconds
- Recommended levels: pH 7.2-7.8, total alkalinity 80-120 ppm and calcium hardness 150-400 ppm
Syringe
- For ease of measuring for application

For HydroTub™ and HydroBarrel® we recommend 20mL of Sirona Sanitizer and 60mL of Sirona Oxidizer, with the water level right below the top hole, immediately after fill up. For HydroGen™, we recommend 30mL of Sirona Sanitizer and 90mL of Sirona Oxidizer.
Your chiller should be turned on with water circulating. Water will appear cloudy for initial 24 hours. Check with pH strips the day after and make necessary adjustments. Most common adjustments are Calcium Booster or PH Booster (sold separately).