BioGuard Smart Shock (519#) is one of the most advanced multi‑purpose shock treatments available for residential pools. Its unique formula combines a fast‑acting sanitizer, strong oxidizer, and built‑in clarifier to deliver a complete cleanup in a single application.

Smart Shock dissolves quickly, kills bacteria, eliminates organic contaminants, and restores water clarity. It also contains BioGuard’s patented blue algae‑fighting crystals, giving your pool an extra layer of protection. Ideal for weekly maintenance or after heavy pool use, Smart Shock keeps water sparkling, fresh, and swimmer‑ready.