Leslie's - 100 lb Power Powder Granular 70% Calcium Hypochlorite Pool Shock

Item No. 18765 | Manufacturer SKU: 18765
Item No. 18765 | Manufacturer SKU: 18765
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
Leslie's  100 lb Power Powder Granular 70 Calcium Hypochlorite Pool Shock
$699.99

Leslie's Power Powder Granular 70 100 lb is a concentrated chlorine pool shock with 70% Calcium Hypochlorite killing bacteria, algae, and contaminants for a clear, sanitized pool. Product packaging may vary, with no change to product composition or weight. More Details
How to get it
Pick your options above to see how you can get it.
Standard delivery
Available in-store only
Want it today? Check another store
This item is only available for AccuBlue Home Members
AccuBlue Home is our premiere water testing system. Learn More
Already a member? to access this item.

Leslie's Power Powder Granular 70 100 lb is a concentrated chlorine pool shock with 70% Calcium Hypochlorite killing bacteria, algae, and contaminants for a clear, sanitized pool. Product packaging may vary, with no change to product composition or weight.
  • Kills bacteria, controls algae, and destroys organic contaminants
  • Concentrated chlorinating granular Cal-Hypo pool shock
  • Fast dissolving
  • 70% Calcium Hypochlorite
  • Fast acting solution for swimming pool problems
  • Great for super chlorination and routine maintenance use
  • Non-Stabilized - No Cyanuric Acid (CyA)
  • Unstabilized Pools: add 6-8 oz. per 10,000 gallons daily
  • Stabilized Pools: add 3-4 oz. per 10,000 gallons every other day
  • 10-20 oz. per 10,000 gallons provides 5-10 ppm available chlorine

Leslie's Power Powder Granular Chlorine is a powerful pool shock that quickly dissolved and combats any bacteria, algae, or contaminants in your swimming pool. Shocking your pool or spa regularly is necessary to keep your pool free of any unwanted contaminants. This helps your chlorine work better and more efficiently. Power Powder Granular is made of powerful calcium hypochlorite and has 70% calcium hypochlorite active ingredient which leaves your pool clear, clean, and ready to use.

Shocking your pool and spa restores chlorine levels and frees up Combined Available Chlorine. Power Powder Granular Pool Shock is the quick choice for many pool owners and professionals due to its strong blend and ease of use.

AccuBlue In-Store Water Testing

Water testing and pool chemicals go hand in hand when balancing pool water. Leslie's makes it easy with in-store water testing that offers precise water testing and customized treatment plans. Take the guesswork out of balancing your pool water and stop by your local Leslie's pool store for a FREE AccuBlue Water Test, keeping your pool clean, safe, and beautiful. Find your closest Leslie's Pool Store today and stop by for your free pool water test!

AccuBlue Home Digital Pool Water Testing

Looking for an at-home digital water tester? Leslie's AccuBlue Home is the total solution for a healthy swimming pool. It all starts with the testing device, which employs Leslie's state-of-the-art water testing technology to give you comprehensive water chemistry results and recommendations in 60 seconds -- all from the comfort of your own home. It's the only at-home pool water test that precisely measures 10 aspects of water chemistry. Learn more: Leslie's AccuBlue Home.

Product Type: Pool Chemical
Chemical Type: Shock
Container Size: 100 lbs
Equivalent SKU: 14209

What does pool shock do?

Pool shock introduces a potent concentration of oxidizing agents, typically chlorine or similar compounds, to eradicate bacteria, algae, and other organic pollutants.

When should I shock my pool?

For optimal effectiveness, it is generally recommended to shock your pool at night. This allows the chlorine to work without interference from the sun's UV rays. Beyond your regular weekly maintenance, there are specific situations that necessitate additional shocking of your pool.

How often do I need to shock my pool?

A regular weekly maintenance schedule involves shocking or oxidizing the pool water each week, using either a chlorine shock or a non-chlorine shock based on the tested levels of chlorine. You may use a chlorine-based shock when chlorine levels are below 2 ppm, or a chlorine-free shock to oxidize contaminants in the water when chlorine levels are above 2 ppm.

How do you shock a pool?

  1. Test the Water: Using a water test kit or test strips, ensure that all aspects of water chemistry are within the proper range. Use non-chlorine shock if your Free Available Chlorine level is between 2.0–4.0 ppm, and use a chlorine-based shock if levels are below 2.0 ppm.
  2. Circulate the Water and Pool Shock: Turn on your pump and filter system to circulate the water. Then, following product label instructions for application, pour your shock around the inside perimeter of your pool. The best time to shock is at dusk or evening hours, so you can let your pump run overnight. Shocking the pool at night allows the shock to work most efficiently, without the sun burning off the chlorine quite as fast
  3. Wait for Free Available Chlorine (FAC) Level to Drop: If using a chlorine-based shock, continue letting the pump run for at least 6–12 hours, then retest the water. The Free Available Chlorine (FAC) level may still be very high, making it unsafe to swim.
  4. Enjoy Healthy, Clean and Beautiful Pool Water: Wait until the FAC level falls within the ideal range of 2.0–4.0 ppm before jumping back in the pool. Now, go enjoy your clear, clean, and safe swimming pool!