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    Pool Shock

      Pool Shock is rated 4.740566037735849 out of 5 by 212.
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    Free 1-Day Delivery Available!

    To: Ashburn

    Order before 4pm CT to receive free 1-Day Delivery

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    Fast Acting & Quick Dissolving

    Swimming pool shock treatments are an essential aspect of spring pool opening but can also be used to give your pool a quick chlorine boost. Pool shock chemicals provide a quick fix for improving chlorine levels in your pool but can also make your pool unsuitable for swimming. Generally speaking, after adding pool chlorine shock to your swimming pool, it is best not to swim for several hours.
    • Powerful chlorinated shock treatment is great for Spring start-up!

    • Ideal for a quick chlorine boost when fast-action is needed!

    • Only add directly to your pool or spa.

    • 68% Calcium Hypochlorite.

    • Initial Dosage: 1 lb. per 10,000 gallons
    read more
      • Item: # Y8005 6 X 1 lb. bags $22.99
      • Item: # Y8010 12 X 1 lb. bags $34.99
      • Item: # Y8020 24 X 1 lb. bags $62.99
      • Item: # Y8030 48 X 1 lb. bags $118.99
      • Product Description
      • Customer Review
      • Product Specification
      • FAQS

      Chorine is added to our pools to kill bacteria and other organic contaminants. Because chlorine becomes ineffective once it binds to bacteria, it is important that chlorine levels are always monitored. When these levels get very low, we turn to the pool shock. Shocking involves adding lots of chlorine to a pool quickly to kill or prevent the build up of contaminants. When adding a pool shock chemical to your pool there are some important tips to remember. First of all, do not mix this product with a small amount of water. Only add directly to your pool or spa. Also, add the pool shock at the end of the day, when everybody is finished swimming, and let the swimming pool shock go to work overnight with the filter running. Finally, always test the level of chlorine in your pool after you add the pool shock and before you go swimming again to make sure the levels are safe.Swimming pool chemicals are obviously an important aspect of maintaining water clarity. Swimming in crystal clear blue water is ideal and as such we utilize chemicals to enhance the quality of our water. Chorine is added to our pools to kill bacteria and other organic contaminants but during this process, chlorine levels lower. Because chlorine becomes ineffective once it binds to bacteria, it is important that we always monitor chlorine levels. When these levels get very low, we turn to the pool shock. Essentially, pool shocking involves adding lots of chlorine to a pool quickly to kill or prevent the build up of contaminants.

      BurnOut® is a registered trademark of BioLab, Inc. In The Swim® is not affiliated with BioLab, Inc. and does not carry their products. The use of BurnOut® is for comparison purposes only.

      Rated 5 out of 5 by from Great dissolving product This is my first year of using In the Swim products. I found it difficult to find my local pool store open at a time convenient for ME. I was dissatisfied with the products from my local mass discount store even though their hours suited me perfectly. Ah, the great solution-an internet pool store. I have been pleased with the way the products, especially the shock works in our pool. I like the way it dissolves. (Not all shocks do this!) And who can beat the convenience? Order one day and receive my order usually the next day, right at my door. No lugging everything home. Thanks In the Swim!
      Date published: 2007-06-01
      Rated 2 out of 5 by from When using" ITS" Pool shock, the following morning & for two days after the Water remains cloudy. I utilize clarifier the next day with the filter continually running. I did find out one time the alkalinity was low, once I increased the Alkalinity level the water amazing became clear. With no heavy rain this time & the water balanced, the pool still clouds up. I switch every other week with the non chlorine shock by "ITS" and that stuff is great! I am thinking about using a different brand or trying the Super pool shock by "ITS". Why is it the pool shock package suggests to "not" predisolve in water but on the website it suggests that you should predisolve?
      Date published: 2008-06-30
      Rated 5 out of 5 by from "To Me, From Me"! ATTENTION POOL FRIENDS: Make Your Life Easier on those beautiful hot and sunny days with this product! I can relax and get my tan on knowing that I can be confident that my pool shock is taking care of any problems lingering in my pool! In The Swim has been absolutely professional, timely in delivery and service, and the only supplier for me. And trust me I am super picky! All I have to do is place my order online and POOF it arrives at my door a day or two later. I am so all about delivery to my door! If you have a family, etc... and time is an issue, give yourself this "To Me, From Me" gift, climb on your raft, and make your life and pool maintainence super easy!
      Date published: 2008-11-27
      Rated 5 out of 5 by from Simply the best and most convenient to use! I order about 3 cases of this every season and it is so easy to use. No measuring; 1 1lb. package for every 10,000 gallons of water. I have used other brands from the local pool store and did not have the same results as I get with this shock. Will never ever run out of it again! Order on the phone or over the net and I have the next day or day after and they even deliver on SATURDAYS! Oh and by the way.......customer service....simply the best when I have questions over the phone! 5 GOLD STARS for them!
      Date published: 2008-12-14
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      Technical Specifications:

    • Completely soluble granular chlorine produces fast acting chlorination.
    • 68% Available calcium hypochlorite.
    • Will not cause over stabilization
    • If using as a weekly shock you will use 1 Lb per 10,000 gallons.
    • Only add directly to your pool or spa.


    • What is In The Swim pool shock comparable to?
      - In The Swim pool shock is calcium hypochlorite. The In The Swim pool shock is comparable to Sock It, Burn Out, Sun Burn, Super Chlorinator, and Power Powder.

      What is the chemical make up of In The Swim pool shock?
      - In The Swim pool shock is 68% available calcium hypochlorite.

      How much Pool shock do I use a week?
      - Using pool shock as a weekly maintenance shock you will use 1 Lb. per 10,000 gallons.
      - Using pool shock as an algae killer you will use around 2 Lbs per 10,000 gallons until algae dies and algae is vacuumed out of the pool.

      How do I dispense my pool shock?
      - do not mix this product with a small amount of water. Only add directly to your pool or spa.

      How does the shock come packaged?
      - It is packaged in 1-pound bags.

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