HTH™ Pool Care Shock: Pool Chlorine Shock
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.
Pure Cal-Hypo Power—
Cal-hypo pool shock raises chlorine fast, clears water, and avoids cyanuric acid (CYA) buildup.
Shock Weekly with Cal Hypo
Weekly pool shock treatment battles algae, bacteria, and cloudiness for confident, swim-ready results.
Quick-Dissolving Action
Rapid, even dispersion minimizes residue for a cleaner liner and balanced, consistent chlorination.
App-Powered Clarity
Combine with HTH™ Test to Swim™ to remove guesswork, optimize dosing, and maintain sparkling clarity.
How to use
HTH™ Shock: Pool Chlorine Shock
1. Add Directly To Water Or Skimmer
Follow the on-pack instructions according to your pool size.
Follow the on-pack instructions according to your pool size.
2. Repeat Weekly
For best results, use HTH™ Shock as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4ppm.
For best results, use HTH™ Shock as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4ppm.