• BioGuard Smart Shock (25lb) is a multi-functional product that shocks, oxidizes, buffers, and clarifies pool water.
• It kills and prevents bacteria growth.
• This product has unique blue algae-fighting crystals that kill unsightly algae.
• There is no need to mix or pre-dissolve, just add it directly to your pool water.
• This product has also been proven to improve filter efficiency.
• Start swimming in as little as 15 minutes after application.
• Keep your pool water sparkling clear and brilliant looking with Smart Shock.

Please Note: Because of National Shipping Restrictions on this Product, 25 1lb individual bags will be shipped instead of a single 25 lb bucket,