HASA Chlorine Tablets

Chlorine 2lbs 1"tabs

Slow-dissolving 1/2-ounce tablets for powerful chlorine sanitation. Ideal for use in floaters, feeders and skimmers, and EPA registered.


Use 12 Hasa Small Cleaning Tablets for every 10,000 gallons of water every 7-10 days. Make sure to test chlorine levels twenty-four hours after adding chlorinator. If necessary, adjust the feed rate so the available chlorine is maintained between 1.5-3.0 ppm. If you are unable to maintain a residual after 3 days, superchlorinate. Superchlorinate and reconnect feeder when residual is below 3.0 ppm. Readjust feed rate to maintain a 1.5-3.0 ppm and the pH is between 7.2-7.6.


For Superchlorination: The addition of several times the normal amount of chlorinating chemical, is necessary to establish an initial chlorine residual in a freshly filled pool, every 7-10 days during the swimming season, and after special problems, such as wind storms, rain, and unusually hot weather. Fast dissolving HASA Chlorinating Granules or HASA Sani-Clor should be used. Follow superchlorination or “shock” directions on the label of the product selected. Up to 90% of the chlorine residual may be lost from ultraviolet radiation from the sun. This loss can be greatly reduced when the pool is stabilized with HASA Pool Conditioner. See directions on the Hasa Pool Conditioner Label.



TEMPORARY UNIT LIMITATION: Due to high demand, please purchase no more than one unit of this product per order.


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    Shipping is always fast and easy with us. However, depending on your region and the time of the year, delivery dates can vary. 

    Western states can expect their items within 3-5 business days. Eastern states can expect their items within 1-2 weeks. 

    Due to Covid and high demand, items may have shipping times that are longer than normal. Please contact us for current shipping details.


    Founded in 1964, HASA, Inc. is a leading producer and distributor of Sani-Clor® and high quality water treatment products used to sanitize and maintain swimming pools and hot tubs, and water systems and containment vessels for recreational, industrial and municipal end markets.