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    Pool Shock

    Average rating for Pool Shock
    (4.8 / 5)
    401 Reviews
    1. 1 year ago
      Unbelievable Quick Results
      For whatever reason, my water had taken on various problems. As I followed a number of suggestions, nothing was working. I ordered and used, for the first time,Assure MultiShock. Within reasonable time, my water was clear and had a much smoother feel to the skin.
    2. 1 year ago
      Great Product
      Have always been happy with these products and how quickly I receive them after I order. Love to read the reviews and it has helped me more than the local pool stores. Ordered a salt generator from here and it saved me hundreds of dollars.
    3. 7 years ago
      Best shock I've used in 27 years!
      I tried Assure for the first time a few weeks ago and was very impressed by how fast it works to raise the chlorine level in the pool. Also, the effects of the shock treatment last longer than products I've used in the past. While it is at the high range of pricing for shock treatments, it requires less product to achieve these results.
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    1. 7 years ago
      Shocking Results!
      This is the best pool shock I've found! Just follow the directions and your pool will sparkle all summer long. I love the ease of ordering and the fast to my door delivery. I generally order enough for the summer as the box(es) fit well on the shelf in my poolhouse for easy access. The only qualm I have is the lack of easy opening as the bags require the use of scissors or some other sharp tool to open them. But the 1 pound size is handy to use and easy to handle. I love In The Swim products and ... read more you know they are working when your neighbor says "Your pool always looks so clear and clean! How do you do it??" Thank You In The Swim for making my life easier and my pool look great!!
    2. 7 years ago
      Great Product
      The field next to our pool was left to go to hay and was not cut down in a timely fashion. The wind was blowing from that direction and a great amount of straw, hay,etc.ended up in our pool. This caused the water to become cloudy and a slime covered the whole pool. We used another brand shock in the pool the first time with very little effect; then I used "In the Swim's Super Pool Shock" and was amazed at how fast it dissolved and worked to clear up our pool. I highly recommend it..
    3. 9 years ago
      Like this much better than regular shock!
      I like the super pool shock much better than the regular pool shock. The super pool shock dissolves much more quickly and does not require mixing prior to adding to the pool. Also, since a bag of this treats 15k gallons vs. 10k gallons for regular pool shock, I can treat my 30k gallon pool with 2 bags of super pool shock instead of 3 of regular shock. Keep that in mind when you are pricing them out.
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    1. 7 years ago
      Keeps me from hiring poolman
      I am a 57 year olf female and I got tired of the 2 1/2 gallon chlorine shock bottles from the pool store. This is a great source of unstablized chlorine. I use 2 bags to shock my 18 x 36 liner pool once per week and when my stablizer reading starts getting high from the 3 inch stablized chlorine tablets I put in my feeder then I use this as a source of unstablized chlorine and cut back on the tablets. The cost is a little high but the altermate is dumping a lot of water from the pool to reduce ... read more stailizer level. I never close my pool.
    2. 7 years ago
      Best Product We Ever Used!!!!!
      We have an in-ground pool and been having problems with under our liner algae, we put in the lithium shock ran the pool filter over night and the next day it was all gone, let me also add we have been fighting this since we opened it in the spring, I wish we would have used this sooner!!! GREAT PRODUCT!!!!
    3. 7 months ago
      Great Product
      I purchased this product after reading all of the other reviews. I'm glad I made the decision to purchase the Lithium Pool Shock. This is the first year my husband and I have owned a pool and we've spent a great deal of money on chemicals to clear up our cloudy pool. This product cleared up our pool within 2 hours. You will spend less money overall if you start out with this product first. No cloudy residue; dissolves quickly; fast acting;
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    1. 7 years ago
      Great Product
      Really keeps my pool water properly balanced.
    2. 9 years ago
      HTH shock and swim
      All i have to do is sprinkle the powder around the pool and it does the rest.I am not good at balancing the chemicals.And since i started using shock and swim,it makes life alot easier.We don't have to worry about getting in the pool too soon after treatment. Its great! And the water is crystal clear!
    3. 7 years ago
      HTH Shock
      Great shock - you can use in the morning before swimmers arrive and it will dissolve and is ready to go before lunch. Great product and great service from In The Swim as always.
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    1. 1 year ago
      Best Non Chlorine Shock!
      I have been using this shock since I got my AG pool for 3 years strong. I use the mineral or power ionization to keep my pool clean. It has never failed me! People remark how clean my pool is! In The Swim is FAB! Fast shipping! Their openining and closing kits are SUPERB too! My pool is crystal clear EVERY spring! I am in it within a week once it warms up with the solar cover I also got oh and the filter system too as the one failed from the pool company after the start of my second season! In ... read more The Swim...YOU ROCK! Thanks!!
    2. 7 years ago
      No more rashes!
      We have had our above ground pool in use for the past 11 years. We were always using cholorine granular on a daily basis. Last year my husband developed a skin rash every time he went in the pool so we had our water tested. Our Cyanunic Acid level was 268ppm. The norm is 30-80ppm. We were advised not to use our pool. When the level of cyanuric acid rises, the “killing power” of the free chlorine residual weakens. At above 50 ppm of cyanuric acid, the time it takes to kill bacteria in the water ... read more is much longer compared to swimming pool water without cyanuric acid. When the level of cyanuric acid builds up, the chlorine becomes increasingly less effective in keeping the water clean and problems such as high bacterial and algae growth can occur. We were advised to drain our pool and start over, which we did. We now only use the Chorine free shock daily and our levels are now in the normal range and our pool is clean. No more rashes! I would have never known that cyanunic acid would have built up in our pool so much over the years and cause bacteria. We definitely recommend using the chlorine free shock and will continue to do so.
    3. 4 years ago
      Excellent Product!!
      I love this product and used in conjunction with my Perma Salt System and the opening and closing kits from In The Swim, my pool is AWESOME!!!!! I just opened my pool today and it is CRYSTAL CLEAR!!!! My pool company actually saved me money on the mineral ionization system by using this shock weekly and only monitoring pH, Calcium, Alk and copper levels. This is worth it!!! Thanks In The Swim for awesome products!!!!!! Great sales too allowed me to stock up!!!!
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    1. 5 months ago
      The best I've found
      I've had my in ground pool about three years now. I have looked for the best product at the best price and In The Swim pool shock is it. It is least expensive and more effective than anything else I've found. I feel the same way about the 3" chlorine tablets.
    2. 9 years ago
      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 ... read more my order usually the next day, right at my door. No lugging everything home. Thanks In the Swim!
    3. 7 years ago
      Great shock
      This is the 4th summer that we've had our in ground pool. We have a local pool supply store right here locally. I've used their supplies as well as the local Wal-Mart. This is the first summer that I've strictly used In the Swim and also the first summer that my pool has been crystal clear. Every other year I have battled my pool turning green, but not this year. I will continue to use In the Swim. Their products are AWESOME and you can't beat the price.
    4. Read more about this product
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    Use Pool Shock the Right Way

    Pool shock helps your pool chlorine keep up with killing the bacteria in your pool. It's important to use pool shock weekly to prevent cloudy pool water and bacteria growth. In the Swim's pool shock and super chlorinating pool shock will help you keep your swimming pool water clean and crystal clear. Our swimming pool shock chemicals are ideal for spring start-ups as well as weekly pool shock treatments. These powerful formulas will eradicate bacteria and other potentially harmful microorganisms from your swimming pool, protecting your swimmers against illnesses and infections. In the Swim's pool shock and super chlorinating chemicals will also take your pool water from cloudy to clear by eliminating algae and a wide variety of other contaminants. For pool owners who like to rely on traditional pool shock treatments to keep their swimming pool clean and sanitary, In the Swim offers chlorinated shock products which are powerful enough to quickly kill bacteria and algae and yet are safe enough for weekly use. Our chlorinated swimming pool shock chemicals and chlorine free pool shock chemicals are available for purchase in a variety of different quantities so you can choose an amount that will be the most convenient and suitable for you. Also, all of our pool shock treatment products are available at great prices. With the high quality and excellent value offered by In the Swim, you can keep your pool water crystal clear and contaminant-free without stretching your pool maintenance budget. If you have questions or concerns regarding In the Swim’s pool shock and non-chlorine pool shock or any of our pool supplies our pool expert customer service team is happy to clear-up your inquiries by phone or email.