BioGuard Smart Shock (22947#) is one of the most effective multi‑purpose shock treatments available for residential pools. Formulated with a unique blend of oxidizers, clarifiers, and algae‑fighting agents, Smart Shock delivers a complete cleanup in a single application.

This fast‑dissolving granular shock works quickly to eliminate bacteria, destroy organic contaminants, and restore water clarity. Smart Shock also contains a patented blue algae‑killing crystal and a built‑in clarifier that helps filter systems remove fine particles more efficiently.

Perfect for weekly maintenance or after heavy pool use, Smart Shock keeps water sparkling, fresh, and safe for swimmers.