Serena Spa® Oxy Blast*, this Non-Chlorine, Shock Oxidizer is oxygen-based. It is not a Sanitizer nor an Algaecide and does not destroy disease-causing germs or bacteria. It effectively eliminates contaminants and does not raise Chlorine levels or produce combined Chlorine. Gentle on spa surfaces. Add 2 ounces of Serena Spa® Oxy Blast* per 250 gallons of water after each use.
*Not available in California.
NEVER mix any chemical with each other before adding to the spa water.
It is recommended to change spa water every 3 months or as needed to maintain water quality.