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    50 lbs 3-Inch Chlorine Tablets NOW ONLY
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    Pool Shock

    1. 2 weeks ago
      Great quality
      Great quality, works great. Use it every season.would definitely recommend.
    2. 4 weeks ago
      Best shock
      Best shock we have ever used. It gets the job done using less.
    3. 3 weeks ago
      Good shock
      Great shock. Much better product than they sell in the stores.
    1. 3 days ago
      Great for pool start up
      Super shock shortens time it takes to make pool go from green to clear when opening it for the season
    2. 1 month ago
      Clear Water !!
      All of the products, especially the chemicals, are high quality and work great. My pool has been crystal clear for years. In fact, I replaced the pool this Spring and the start up kit brought the pH, alkalinity and chlorine levels right to where I needed them. Stop paying too much !! This company is fabulous.
    3. 5 years ago
      Cloudier than other brands
      By chance I had a few bags of ITS Super Shock and a few bags of Ultra Shock made by N. Jones Company. I noticed when putting them in the pool the ITS shock made the pool cloudy and the other did not. I have no idea why, but I would prefer the other shock.
    1. 3 years ago
      A Great Product
      I have been using this product as a supplemental pool shock for 16 years. I have lots of grand kids and like to keep my chlorine level at 3ppm. After heavy swim usage I shock with chlorine-free shock to sanitize with out raising the chlorine level. As a retired Pool Store employee I have recommended this type of shock many times to customers who have had high chlorine levels but needed additional water sanitation.
    2. 4 years ago
      Excellent Compliment for Chlorine Users
      I learned this from several pool chemistry experts, plus through use over years. If you use chlorine to general purpose sanitize your pool, this is an excellent complimentary shock treatment. It disperses well and you will not have any where near as long of a wait time as super-shocking with chlorine to keep the kids/guests out of the pool. Individual packets are a plus, but it is more costly than chlorine. It's worth it as an alternative shock.
    3. 6 years ago
      Great on my skin
      I have a fair skin complexion making me highly susceptible to chlorine. I originally thought I could get by with just using this and not using Chlorine in my pool. Nope don’t make that mistake, that was a rookie move I had made many years ago until I found my pool having mustard algae and a huge chlorine demand. Wound up forking out a lot of money to bring my chlorine levels back up to par, but I paid for the lesson. So while you still need chlorine to effectively balance your pool, this is ... read more great for weekly shock treatments and upkeep which is easier on my skin then standard chlorine treatments.
    1. 2 years ago
      Great Dissolving Qualities
      In The Swim granular chlorine is the only one we will use in our pool. Coupled with occasional Super Pool Shock treatments throughout the season, the pool stays crystal clear. A great combination, and one that we have counted on for over ten years.
    2. 2 years ago
      chlorine
      Works just like the very expensive chlorine other stores sell.
    3. 3 years ago
      Chlorine
      Great product, great price, free shipping. Shop here every year.
    1. 1 week ago
      GREAT!
      I was a little skeptical when I ordered, but when it arrived, I was giddy...68% hypochlorite! Virtually the same strength as Leslie's product at a substantially lower price. Shocked my pool, and the green was gone.
    2. 5 days ago
      satisfied
      Extremely satisfied with product. Also appreciate having delivered.
    3. 10 years ago
      Keeps pool sparkling
      The granulated shock is easy to use and dissolves quickly. We prefer this to the packaged shock. It works just as well and leaves less waste (plastic packaging). It's effective at keeping our pool water clear and sparkling. It looks so inviting!! We live out of the 1 day delivery zone, but we still received our order very quickly, which is important to me. I've ordered this product from In the Swim for several years now and have been very pleased, both with the product and the service.
    1. 5 years ago
      Disappointed
      Was hopeful it would dissolve much better than it did. Having to brush the bottom of the pool with each application is not worth it. The chemical part was fine, just didn't enjoy the brushing. I will go back to liquid chlorine.
    2. 5 years ago
      Excellent Product
      I tried the instant chlorine and it works great. I put in my pool every eight days and the water is clean and a nice blue. I like it better then the liquid chlorine due to the fact that the containers always leek when I buy them at the hardware store.
    3. 7 years ago
      Won't switch back!
      I ALWAYS use liquid chlorine and would pick it up with my groceries while at my local Wal-Mart. The huge bottles took up most of my cart not to mention mixing with groceries never set right with me. I saw this product online and with the free shipping thought, why not. When I first received the package, I thought something was wrong because the box was so small. The bottles were really little which really worried me. I can't believe how well they work. One of these little bottles works better ... read more and lasts longer then a whole gallon jug of the other stuff I used to buy. It dissolves quickly and does not leave a powder residue on the bottom of the pool floor. A little more expensive then what I was paying before but I use less and it gets delivered right to my door. So worth it!
    1. 3 years ago
      Clouds Water
      This product worked better than the HTH shock that I also purchased however they both do not dissolve like they claim to and they also make the water cloudy. Will probably not order again. I prefer the In The Swim Super Shock...never had a cloudy issue with that product.
    2. 8 months ago
      Great Shock for Price and Excellent Pool Water
      Best Shock I've ever used in 25 years. Very efficient results with less use than in the past with lithium shock
    3. 2 years ago
      Di Zap pool shock
      I have my packages of shock delivered right to my door don't have to run to pool store. My pool stays crystal clear and I have recommended to all my friends never have cloudy water again.
    1. 2 years ago
      Great kit!
      This kit is perfect for keeping our pool clear! It makes maintenance a snap!
    2. 2 years ago
      Eliminated My Yellow Algae
      We have a 15,000 gallon 16 year old concrete pool that needs to be refinished because it has corroded over the years from chemical use which creates the perfect environment for algae growth. We had mustard algea pretty much everywhere with a concentration on the sides and steps. The Super Algeacide and Super Shock totally eliminated it! It took a lot of elbow grease (brushing and vacuuming), but after a couple days and almost the entire bottle of Super Algeacide over the course of thee days, it ... read more is gone and has remained gone! Last summer I spent much more $ at our local pool supply store buying products to eliminate the mustard algea. Great product and great price!
    3. 1 month ago
      Good stuff
      Great product have used it for years and a good price
    • 2019-06-26
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    In The Swim Knowledge Pool: Swimming Pool Shock

    In The Swim's Dr. Pool

    Shock Treatments for Swimming Pools

    Granular chlorine is a convenient way to sanitize and disinfect pool water. Used in small amounts, swimming pool shock can raise chlorine levels quickly for a pool found to be lacking. In larger amounts it will easily super-chlorinate or hyper-chlorinate pools for removal of cloudy water, chloramines, and disinfectant by-products. Most importantly, swimming pool shock quickly destroys pathogenic bacteria, viruses and microbes found in pool water. 


    The Many Types of Pool Oxidizers

    •  - Di-Zap Multi Shock is stabilized, and can be used daily in pools, spas and fountains without calcium build-up.
    •  - Pool Shock and Super Pool Shock from In The Swim is suitable for all purposes, sold in bags and buckets.
    •  - Non-Chlorine pool shock does everything that pool shock does, with exception to killing heavy algae blooms.
       

    The Many Uses of Pool Oxidizers

    •  - Restores clarity to cloudy pool water
    •  - Kills pool algae strains of all types
    •  - Sanitizes to destory bacteria of all types
    •  - Removes chloramines and other chlorine byproducts
    •  - Breaks down organic and non-organic matter, and bather waste
    •  - Raises chlorine levels quickly when found to be near zero
    •  - Removes stains on plaster, pebble and fiberglass pools
       

    How To Shock a Pool

    •  1. Clean the pool of debris before shocking a pool
    •  2. Balance the water chemistry and adjust pH to 7.2-7.4
    •  3. Each pound of pool shock can deliver between 7-9 PPM, per 10,000 gallons of pool water
    •  4. Add enough to reach a target threshold of 10, 20 or 30 PPM, depending on water condition
    •  5. Brush the pool, and run pool filter for 6-8 hours following super-chlorination
    •  6. Keep solar covers safely stored off the pool until high chlorine level subsides
    •  7. Check chemistry levels within 24 hours and adjust as needed, if chlorine is found to be zero, repeat shock treatment
       

    Pool Shock Treatment Tips

    •  - Always add chlorine to water, Never add water to chlorine
    •  - Always use the entire bag, Never store half-used bags of shock
    •  - Distribute the chemical around the pool, Never pour into the skimmer
    •  - Always adjust pH level to the low side, 7.2-7.4, where chlorine is more potent
    •  - Brush the pool after shocking, with a stiff pool brush, or a stainless steel bristled algae brush
    •  - Vinyl pools should pre-dissolve pool shock. Pour into a bucket of clean water and stir until dissolved
    •  - Sweep up any spills immediately, and add directly to the pool.
    •  - Never mix chlorine granules with any other type of chemical, or anything except water.

    For More Info See our Pool Shock eGuide:

    Pool Shock eGuide

    Read More | Download