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    Pool Shock

    1. 1 week ago
      good product
      Doesn't dissolve as well as some of the others, but does keep the pool clear
    2. 2 weeks ago
      Stain after using shock
      Stained the bottom of my plastered pool black within 24 hours of changing the entire pool's water. After about 36 hours, the stain spontaneously disappeared. Not sure why. It was not algae and didn't scrape off with a metal bristled brush. I'll try it one more time since the adverse reaction wasn't permanent.
    3. 2 days ago
      It is what it is
      It's Calcium Hypochlorite, like all of the other brands of standard pool shock. It works fine, but I buy it based on price alone.
    1. 4 weeks ago
      Pool Shock!
      Perfect effects! Price is competitive and home delivery can’t be beat.
    2. 2 months ago
      Best chlorine shock!
      This is by far the best chlorine shock to use hands down. This is one of only three products I use throughout the year to maintain a crystal clear pool.
    3. 2 months ago
      Great Shock, good value
      I prefer super shock to other brands and even the other in the swim shock. My pool seems to hold the shock longer so I use less.
    1. 2 months ago
      Convenient for supplementing tab feeder
      I bought this to supplement my chlorine tab feeder during excessively hot sunny weather. Even with my tab feeder wide open, my chlorine level was insufficient during July. I add some of this daily to maintain the appropriate chlorine level in between shock treatments, during the hottest weather and it works beautifully.
    2. 4 days ago
      Recommend di-Chlor granular chlorine
      Since we’ve been using this product our pool is so easy to maintain! No need for any other chemicals & our pool is crystal clear all season!
    3. 3 weeks ago
      No residue!
      Finally found a chlorine shock that doesn’t leave residue. Will buy again.
    1. 4 months ago
      Easy and effective.
      Our pool was clear all summer with this shock. When we opened it this spring the water was perfectly clear. It is the best shock I have ever used!
    2. 3 weeks ago
      Good product but falls a bit short
      Although it’s a good product don’t depend on it to work as your algaeside eveb though it says it will. If conditions are right you will still get algae in your pool. I recommend the super shock once a week in conjunction with this for a crystal clear pool
    3. 1 month ago
      Makes pool maintenance so easy
      I alternate this shock with regular shock 1-2x/week - occasionally less often if nothing is happening. Pool needs very little chlorine. After struggling through trying many different products to maintain balance when we first got the pool, now we're down to a super simple routine - practically maintenance free! Big fan!
    1. 3 weeks ago
      pittsburgh pa
      love this product it helps keep our pool clear longer
    2. 1 month ago
    3. 1 month ago
    1. 4 weeks ago
      Great product
      Does a good job at a great price. I have a mineral system and do not use chlorine shock. I have used this product for 8 years.
    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. 4 weeks ago
      Best for pool parties.
      We use this pool shock right before we have pool parties where we know the pool is going to be heavily used. It's great because you can swim right away after using the non-chlorine type. It's our best defense to keep our water balanced, clean and clear.
    1. 2 days ago
      Amazingly effective!
      I am in complete disbelief of how effective this product is. I was foolishly using Walmart brand shock for years ( simply because it was convenient) I live in Florida and from April through October I typically use 3 to 4 bags a week. I ran the numbers and decided to buy this product. I have literally only shocked my pool twice in the last six weeks! My biggest problem is that I ordered a huge bucket expecting to go through it as quickly as the Walmart brand. It’ll take me years to go through ... read more this! Highly recommend !
    2. 1 decade 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.
    3. 2 months ago
      Works as expected. Fast delivery.
      Received as expected. It is a bit cumbersome to move around such a large pail (50lb), but the price is why I went with it. I use it as pool shock for my 45,000 gal in ground and it will last a while.
    1. 2 months ago
      Very convenient
      Like that I can get the basics all in one package deal.
    2. 1 year ago
      Great Value
      We always get our pool products here and are never disappointed.
    3. 1 month ago
    • 2019-09-19
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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