hth® 3" chlorinating tablets, 25 lbs

Protect your indoor and outdoor swimming pool against bacteria, algae and other organisms, and enjoy clean, clear water with HTH® 3" Chlorinating Tablets. This stabilized chlorine sanitizer comes in three-inch tablets for use in feeders, floaters and skimmers; they're also compatible with saltwater systems.

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About This Item

Protect your indoor and outdoor swimming pool against bacteria, algae and other organisms, and enjoy clean, clear water with HTH® 3" Chlorinating Tablets. This stabilized chlorine sanitizer comes in three-inch tablets for use in feeders, floaters and skimmers; they're also compatible with saltwater systems. Convenient and easy to use, one tablet treats 10,000 gallons of water for up to one week. Best of all, these chlorine tablets contain cyanuric acid to help protect against chlorine loss due to sunlight. Spend more time splashing and less time sanitizing with HTH® 3" Chlorinating Tablets for Swimming Pools. TO USE: Place one tablet in pool feeder, floater or skimmer per 10,000 gallons of water every week or as often as needed to maintain a chlorine residual of 1-4 ppm. Do not add directly to the pool as this can cause damage to pool surfaces.


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Sanitize Pool Weekly for Clear and Clean Water


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Kills Algae and Bacteria

Algae and other organisms can turn pool water green. HTH® Chlorinating Tablets destroy algae and bacteria to keep the water looking blue.

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1 Tablet Works for up to 1 Week

These easy-to-use chlorine tablets dissolve slowly and effectively to sanitize your pool. One tablet keeps working for up to one week per 10,000 gallons.

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Formulated to Prevent Chlorine Loss

HTH® Chlorinating Tablets are formulated with cyanuric acid (CYA) to help protect against chlorine loss due to sunlight. That means less time sanitizing and more time swimming. 


How to Use HTH® Chlorinating Tablets


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1. Test and Balance pH Levels

First, make sure the pH of the water is balanced. If the pH is too high or too low, the chlorine sanitizer won’t work as effectively. The ideal pH range is between 7.2 and 7.8.

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2. Sanitize After Sunset

Sanitizing your pool at night allows more time for HTH® Chlorinating Tablets to work, so your pool can be swim-ready when the sun comes up. 

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3. Apply to Feeder, Floater or Skimmer

Place one tablet in pool feeder, floater or skimmer per 10,000 gallons of water every week or as often as needed to maintain a chlorine residual of 1-4 ppm. Do not add directly to the pool as this can cause damage to pool surfaces. 


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