HTH™ Pool Care Shock is a fast-acting pool shock engineered to restore sparkle and confidence—without adding cyanuric acid (CYA).

• This Cal hypo swimming pool shock treatment boosts chlorine quickly to kill bacteria, fight algae, and clear cloudy water, helping you maintain balanced, inviting conditions after storms, parties, or heavy use.
• Designed for all pool types, this dependable pool shock treatment dissolves fast and won’t fade vinyl liners, so you can focus on the swim, not the stress.

Prepare for whatever lands in your water—HTH™ is here to help.