Pool Care Shock Advanced (6 pack)

HTH Shock Advanced is the powerful 4-in-1 formula with Cal Hypo that kills and prevents bacteria and algae, as well as reduces chlorine odor and irritation, providing crystal clear, healthy water. This fast-acting, fast-dissolving Cal Hypo formula in HTH Shock Advanced offers chlorination without adding extra cyanuric acid (CYA) for a beautiful sparkle all season. It is great for all pool types and won't fade your pool liner.

To use HTH Shock Advanced, follow the on-pack instructions according to your pool size, adding it directly to the swimming pool water or skimmer. For best results, apply HTH Shock Advanced as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4 ppm.

HTH was developed with the pool owner in mind, recognizing the challenges of maintaining pool water. With economical, easy-to-use solutions, HTH is designed to work hard so you're prepared to tackle whatever life throws in your pool. From balancing your water to treating green water, HTH offers a full line of products to keep your pool water healthy and your swimmers happy.

The benefits of HTH Shock Advanced include staying all clear for cannonballs, as this fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. It is a multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity.

The Cal Hypo-based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock, making it compatible with all swimming pools, including vinyl-lined pools and saltwater systems. For best results, use HTH Shock Advanced with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly.

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