SpaGuard Shock Oxidizer (1678#) is a premium, fast‑acting oxidizer designed to keep spa water clean, clear, and comfortable. This powerful formula breaks down organic contaminants such as body oils, lotions, sweat, and environmental debris that reduce sanitizer efficiency and cloud water.

Shock Oxidizer helps restore clarity, improves water quality, and enhances the performance of your primary sanitizer. It’s perfect for weekly maintenance or after periods of heavy spa use. With quick‑dissolving granules and easy application, maintaining fresh, inviting spa water has never been simpler.