Hot Tub Things Oxidizing Spa Shock – 5 lb Chlorine-Free Oxygen Cleaner

Q: Is this a sanitizer?

A: No—it’s a non-chlorine oxidizer that removes organic contaminants; a sanitizer like chlorine, bromine, or ozone is still required.

Q: How often should I use it?

A: Ideal after every spa use or at least once weekly to prevent cloudy water and maintain freshness.

Q: Does it raise chlorine or hardness levels?

A: No—it won’t add chlorine, calcium hardness, or stabilizer, making it ideal for all spa chemistries.

Q: Is this suitable for all spa types?

A: Yes—it's safe for acrylic surfaces, seal materials, heater components, and various spa systems.

With pump and filter running, add 2 oz per 500 gal of spa water after use or weekly.

Let water circulate for at least 20 minutes.

No filter backwash required unless the water clarifies or heavy residue occurs.

Resume regular water testing and sanitizer maintenance.