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 for crystal clear, healthy water. Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause overstabilization or chlorine lock and cloud your water. The fast-acting, fast-dissolving Cal Hypo formula in HTH™ Shock Advanced provides chlorination without adding extra CYA for a beautiful sparkle all season. This product is great for all pool types and won't fade your pool liner.
Stay all clear for cannonballs! This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation and quickly restores crystal clarity.
Visibly brilliant sparkle This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock.
Compatible with all swimming pools This product is great for all pool types including vinyl-lined pools and salt water systems.
You're all clear with HTH™ For best results, use with HTH™ 6-Way Test Strips to test and balance your swimming pool water twice weekly.
- Multi-functional shock treatment for weekly use
- Use weekly to solve 90% of pool water problems within 24 hours
- Restores crystal clarity in 24 hours
