Sizes: 2.5 lbs & 5 lbs.

Hot Springs- FreshWater MPS Chlorine-Free Oxidizer reduces the organic content of spa water, especially odor-causing ammonia and chloramines as well as soaps and oils resulting in brighter, cleaner, odor-free spa water!

MPS or Oxidizer (also called Spa shock)) is a non-chlorine shock treatment that eliminates odors and reduces irritating contaminants, to leave water sparkling clear. While it works similarly to Chlorine, Shock does not replace chlorine.

For best results, use Chlorine on a weekly basis and Shock 10 minutes prior to using your spa.

**DO NOT use in biguanide treated spas