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    Winter Algaecide

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    Item # W1140

      • Winter Pool Algaecide is highly effective at preventing green, black and mustard algae.
      • Potent formula provides outstanding results.
      • Provides dependable control of algae growth throughout the winter season.
      • Chelated Copper pool algaecide stays strong all winter.
      • Best pool algaecide for winter use!
      • Available in one quart bottles; value-priced.
      • Unique winterizing algaecide is specifically formulated to fight cold weather algae!
      • A single treatment can prevent algae growth for up to 5 months in a covered pool.
      • Winter Algaecide does not interfere or disrupt other winter pool chemicals.
      • Compatible with all winter chemical kits and other winter pool chemicals.
      • 1 quart treats up to 20,000 gallons.
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      • Product Description
      • Customer Review

      This fall, banish algae from your swimming pool with Winter Pool Algaecide. Winter Algaecide is a highly effective formula which stops growth of black, green and mustard algae at a cellular level. Stays active for up to 5 months in a covered pool. For pools over 20,000 gallons or pools with mesh safety covers, 2 quarts is recommended for best results.

      Winter Algaecide can be used successfully with many other types of winter pool chemicals. In fact, Winter Algaecide even allows other swimming pool chemicals to work more effectively over a wider range of pH levels. Remarkably effective and reliable, this winter pool algaecide provides pool owners with an excellent weapon against winter algae growth.

      In The Swim has been selling this special formula of Winter Algaecide since 1984. It works so well, and is so popular with our customers, that they come back again and again – even when they tried switching to an off-brand.

      For unparalleled winter protection, add our winter pool algaecide to your pool after you have cleaned the pool, balanced the chemistry and lowered the pool water. Just pour it into the pool; the active polymers distribute themselves through the pool in a few hours, without the need for circulation.

      Our best pool algaecide for winter will not disappoint. You can count on our quality formulation to keep your pool water fresh all through the fall and winter, so that your spring pool opening is less work. Many of our customers who don't use a winter chemical kit use winter algaecide along with a floating chlorinator to maintain their water quality through the long winter.

      Rated 5 out of 5 by from Satisfied! Satisfied with product, price and shipping ! Will use again.
      Date published: 2017-11-05
      Rated 5 out of 5 by from Works great! Used this product last fall. My 19th opening was the best ever! Will use it again this fall.
      Date published: 2017-06-06
      Rated 5 out of 5 by from Fabulous product I live in west tn the winters are mild. It gets warm under the tarp. I put the winter algrcide in at closing around the end of sept. & to be safe another bottle the end of jan its 20x40 inground. In the spring its algi free! can see 10 ft down & ready to open
      Date published: 2016-09-10
      Rated 5 out of 5 by from long lasting our pool does not get covered in the winter and I love the way this lasts!
      Date published: 2015-10-06
      Rated 4 out of 5 by from Winter Algecide Great stuff for closing your pool for the winter season.
      Date published: 2014-12-03
      Rated 1 out of 5 by from Misleading This is advertised as a polymer pool algaecide. It is a copper based algaecide. I you don't want copper in your pool, do not order this product.
      Date published: 2014-11-07
      Rated 5 out of 5 by from Winter Algaecide Helps keep the pool water from becoming green over the winter months.
      Date published: 2014-10-06
      Rated 5 out of 5 by from Winter Algaecide I have been using the In the swim winter algaecide for about 12 years.... Works great... I put one quart in at closing and I add a quart about ten day before I open the pool in the spring.....
      Date published: 2014-10-03
      • y_2017, m_11, d_22, h_22
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