Best Pool Shock in 2023: Reviews and Recommendations

BENEFITS: Increases the chlorine level in swimming pools to kill bacteria and algae to keep your pool water clear and ready for fun all season long

USE: Apply directly to pool water as needed; Test pool water and shock weekly to keep free available chlorine levels between 1 and 4ppm

COMPATIBILITY: Effective for all swimming pool types including pools with liners and Gunite pools, and saltwater pool systems

FEATURES: Increases chlorine levels; Kills and prevents bacteria and algae; Keeps water clear; See results in 24 hours; 1 bag treats 13, 500 gallons; Won’t fade vinyl pool liners

INCLUDES: Twelve 1-lb bags of shock treatment for your swimming pool

BENEFITS: 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

FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore 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 saltwater 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

BENEFITS: 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

FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore 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 saltwater 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

Fast Acting Pool Shock Treatment: Quickly boost the chlorine levels in your pool to remove algae and other contaminants for crystal clear pool water

Pro-Grade Cal Hypo Pool Shock for Regular Maintenance: Made of 68% calcium hypochlorite, with 65% available chlorine, regular doses of this chlorine shock treatment keep your pool clear all season long

Easy to Use: Each pound of chlorine shock comes in its own easy-to-use bag for quick, measure-free use

How to Use: Use one 1lb bag of Super Shock per 10,000 gallons of water. Spring openings and pools that have extensive algae blooms may require 2-3 doses to properly treat and sanitize

Made in the USA: Doheny's Super Shock is manufactured and packaged in the USA

Super powerful and effective chlorine shock treatment that can quickly take your pool water from cloudy to crystal clear

Quickly eliminates harmful contaminants from your pool water

Ideal for spring openings and regular maintenance

Main active ingredient is 73% Calcium Hypochlorite makes it our strongest pool shock

Dosage: 1 Pound per 10,000 gallons

24 bags (1-pound each)

Fast-Acting Quick-Dissolving Swimming Pool Sanitizer

Kills bacteria, controls algae, and destroys organic contaminants in pools

68% calcium hypochlorite

Recommended Dosage: 1 pound per 10,000 gallons of water

Fast-acting Calcium Hypochlorite chlorine granules provide 65% minimum available chlorine for hard-hitting immediate results!

NOTE: This item cannot be shipped to Alaska or Hawaii (item will be removed from your order).

Fast-acting Calcium Hypochlorite Cal-Chlor chlorine granules provide 68% available chlorine for hard-hitting immediate results!

Clears cloudy water or dull water appearance. Non-stabilized formula is ideal for super shocking or everyday use, contains no cyanuric acid.

Cal-Chlor granules can be used in swimming pools, spas and hot tubs. Must pre-dissolve/dilute to prevent bleaching of the liner.

Pool Shock and Super Chlorinator

70% available chlorine, Pool Shock and Super Chlorinator

Fast dissolving granular formula

1 lb will provide 2ppm of available chlorine in 40,000 gallon pool

Kills 99.9% of bacteria or algae

Product Does Not Cloud Pool

Ready To Use, No Mixing Required - Great Choice for Pool Closings

Perfect For Pressure Washing, Sanitation & Other Related Uses

12.5% Commercial Grade Strength Liquid Chlorine - USA Made - EPA Registration No. 55852-2