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    Chlorine & Bromine

    1. 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.
    2. 4 months ago
      A Must have for the hot summer months
      This product will clear out the nastiest water. In the south we get tropical showers that will require a lot of chlorine. This product is wonderful and gets the job done.
    3. 2 years ago
      I LOVE THIS LITTLE BOTTLE
      AT FIRST I WAS SKEPTICAL ABOUT THIS POWDERED INSTANT LIQUID -- I NORMALLY BUY THE LIQUID CHLORINE TO ADD TO MY POOL, SO AT FIRST WHEN I OPEN THIS BOTTLE AND SAW IT WAS GRANULAR I THOUGHT WHY WOULD THEY CALL THIS "INSTANT LIQUID CHLORINE" BUT I HAD NO CHOICE AT THE MOMENT AND USED IT AFTER A LARGE POOL PARTY AND BOY WAS I PLEASANTLY SURPRISED...IT MADE MY POOL CRYSTAL CLEAR AND I'VE HAD TO USE SO LITTLE TO MAINTAIN ON A WEEKLY BASIS...SO I LOVE THAT I'M ACTUALLY SAVING MONEY. THANKS IN THE SWIM!
    1. 3 months ago
      Great Product
      Great product. Does not make the pool cloudy. We use this as shock for our pool. It was recommended from our pool guy.
    2. 2 months ago
      In The Swim is the best value for pool chemicals..
      Good deal for the price. This is the first time I have bought the Calcium hypochlorite from this site but it is a good deal compared to pool stores and other online sites.
    3. 5 days ago
      recommended
      Always quick shipping and delivery, as well as the best price.
    1. 2 years ago
      Great product, free next-day delivery!!
      We have always used these sticks, slow dissolve, fit perfect in chlorinator, free next-day delivery.... what isn't to like the ease of this?!?!
    2. 1 decade ago
      No More Trips To the Pool Store !
      Ever since I switched to In The Swim I no long make weekly trips to the pool store. The products are fantastc and get shipped direct. I love the Chlorine Sticks I have tried all the expensive brands and for the past two seasons I have used in the swim brand and my pool is crystal clear. I use three products from in the swim - Clorine Sticks . Phree and clear and pool perfect with phosfree THATS ALL !! and it been the best two seasons in 10 years. Check out the other products as well
    3. 2 months ago
      Great product
      I have been using "In the Swims" chlorine sticks for over 20 years. Probably longer. I float the sticks in the floater and it works well.
    1. 1 year ago
      Swimming pools and more
      In the Swim is the place to go for maintaining one's swimming pool and or septic system. Their pricing, convenience of shipping, and availability not to mention the coupons are just some of the reasons we have been their customer for years.
    2. 3 years ago
      Fast delivery
      The company is quick to ship and I always get what I paid for. No surprises.
    1. 3 years ago
      Great product, excellent service ....
      I love 1" chlorine tablets and ordered a 50 lb bucket. It is hard for me to lift this weight so I had geared myself up to lift it and pour some tablets into a smaller container to put into my chlorinator. Imagine my happiness when I opened the 50 lb bucket and found it already divided into smaller cellophane bags. All I had to do was take out a bag, cut it open, and put into the chlorinator. I am keeping the algae at bay and not putting my back out. Thank you soooo much!!!!
    2. 4 weeks ago
      Best value and best product out there
      15 tabs last all week in my 25,000 gallon inground pool. And it keep the chlorine on the high side as opposed to the low. Great life on this product too. Haven’t noticed any deterioration in its strength after it winters over either. GREAT PRODUCT. We love it in the Northeast!
    3. 1 decade ago
      Fantastic purchase
      I ordered the 1" tablets from In The Swim, and am now using less tablets, my pool water is alway good when checked and I saved $$$$$
    1. 2 years ago
      Not anti-scale
      I've been using these for about a year now in my well chlorinator, and I have to descale it weekly.
    2. 1 year ago
      Reliable source for consistent chlorination.
      Right product for a commercial pool, always swift delivery
    3. 1 year ago
      Works like a charm
      So much more stable for our pool than regular chlorine tablets. A step in the right direction!
    1. 1 year ago
      CRYSTAL CLEAR SPARKLY pool, better than Calpo!
      We switched from super-shock to Dichlor for our 18x33' above ground pool because our well water is extremely hard, and this brand of it is awesome! 99% sodium Dichlor clears our pool SO FAST! Calpo took WEEKS to clear a green pool. With di-zap, we have a crystal clear pool in ONE day. Beautiful, clear, SPARKLING. Amazing. Plus it helps keep our stabilizer levels up... another problem we were having. And it dissolves quickly & completely - no liner bleaching. Love di-zap from In The Swim!
    2. 2 months 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. 3 years ago
      Bought to help in the management of our salt system pool after having the same recommended by the pool supply where a water sample was taken which is about 29 miles one way.
    1. 1 decade ago
      Great Product
      I love the fact that this product works so well with no fuss and muss, You dump the appropriate amount into the skimmer basket and let your filter do the rest. I have no problem maintaining the proper chlorine level and the filter does all the work. If you do run into any algae growth, a heavier dose of this product works well to kill it. No wasting money on costly algaecides. Reccomended doses for weekly shock are on the container too. I also love the safety lid. I have used many that are just ... read more so hard to open, this one just has you squeeze the tab and rotate. No more fighting the lid just to get to the chemical.
    2. 2 months ago
      "sparkling pool"
      Delivery is fast; usually one day; Product is recommended for our Pool, we are happy the purchase
    3. 2 years ago
      Excellent product
      I have had great results with this product. Well worth the money.
    • 2019-10-21
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    In The Swim Knowledge Pool: Pool Chlorine & Bromine

    In The Swim's Dr. Pool

    America's Most Popular Pool Chlorine!

    According to the CDC, free chlorine kills most bacteria in less than a minute if concentrations and pH level are maintained properly. Swimming pool chlorine is the most widely accepted pool sanitizer available, and for over 75 years, pool chlorine has been the most popular method to disinfect and sanitize pool water. Pool bromine can be used as an alternative pool water treatment, yet chlorine tablets and granular chlorine remain America's first choice for maintaining clean and clear pool water. 


    Pool Chlorine or Pool Bromine?

    The general rule is that bromine is more often used in spas and hot tubs, and chlorine is more often used in pools. Although they are close cousins and adjacent to each other on the Periodic Table, bromine and chlorine have distinct differences, and unique benefits to offer pool owners. 

    Chlorine and Bromine

    • - Bromine can be reactivated to reduce cost.
    • - Bromine is more stable in hot water, to provide longer lasting sanitation, even during full use.
    • - Bromine is more stable in a wider pH range, remains strong under rapid pH swings.
    • - Bromine has less odor in the water, and less irritation to skin and hair.

     

    • - Chlorine is the most economical way to sanitize a pool.
    • - Chlorine is sun-stabilized in our 1" or 3" slow dissolve Trichlor tablets and 8 oz. sticks.
    • - Chlorine tablets and sticks dissolve rapidly enough to treat larger pools effectively.
    • - Chlorine granules react instantly for rapid super-chlorination or shock treatments.

    Swimming Pool Chlorine Types and Use

    In The Swim pool chlorine dissolves fast and almost instantly begins to sanitize your pool water. In The Swim 3 Inch Chlorine Tablets are 8 oz. stabilized pool tablets, and are also available as a 0.5 oz. pellet, in our 1 Inch Chlorine Tablets, for very small or very large pools. In The Swim 8 oz. Slow Dissolving Chlorine Sticks work fast and last longer. Our 3-inch Super Multi-Tabs are unique chlorine tabs with stabilizer, algaecide and clarifier added. Sticks or tablets can be used in chlorine floaters, or place the pucks into an in-line or off-line chlorine feeder, to provide a daily sanitizer level that is consistent and constant. 

    In The Swim granular chlorine like the economical Cal-Hypo granular chlorine and stabilized Di-Chlor chlorine granules are both available loose in buckets and also sold in 1-pound bags, as Pool Shock, Super Shock and Di-Zap. Pre-dissolve chlorine granules into a large bucket of water for vinyl pools, or sprinkle the powder directly into concrete pools, spas and fountains to maintain sanitizer levels, to raise low levels rapidly, or to super-chlorinate the pool. Granular chlorine is used regularly to quickly kill algae and bacteria, and to oxidize microscopic particles and contaminants in the water.

    Pool Chlorine Chemistry

    Chloramines form when a chlorine molecule has combined with ammonia or nitrogen to produce the familiar scent often associated with swimming pools - that’s not the smell of free chlorine, but of combined chlorine. As chloramines build up they reduce the effectiveness of your sanitizer. When the chloramine level (Total - Free Chlorine) is greater than 0.3 ppm, (TC-FC=CC), this is time to add pool shock to your pool to remove the chloramines. 

    UV rays from the sun breakdown chlorine which makes your sanitizer less effective. Although In The Swim pool chlorine tablets are stabilized, it takes some time for a residual to build up. Pool stabilizer (aka conditioner) contains cyanuric acid to reduce sunlight degradation. It’s like sunscreen for your chlorine, and will save you money in the long run. 

    The pH of your pool water has a large effect on the efficacy or potency of your chlorine. In addition to maintaining stabilizer levels in the 30-50 ppm range, keeping a close eye on pH will reduce your chlorine costs, and also help ensure clean and clear pool water. At a high-pH level of 8.2, over half (+50%) of your chlorine is wasted. Pool chlorine works best at low pH ranges of 7.2-7.4, and becomes less active in higher pH pool water. 

    Bromine for Swimming Pools

    In The Swim Bromine Tablets are slow-dissolving by nature, and can take longer to build up a residual, although bromides can be added to quickly boost levels. Bromine is also un-stabilized, so it does not stand up well to bright sunlight. However, bromine tablets are popular for indoor pools or heavily shaded outdoor pools. Bromine pools have a softer smell of pool bromine, and can re-activate bromides into bromine, simply by shocking the pool (with chlorine!). 

    To use bromine in a pool, you will need to have a bromide ion 'bank' built up, or a preexisting level of bromide ions (the reduced form of bromine). Many bromine users add Brom Booster to raise levels quickly when converting a pool to bromine. Then you simply use the bromine tabs in a brominator (bromine floaters are not as effective). In The Swim Bromine is a BDCMH formula that stands up to sun degradation better than other bromine tablets, and contain no cyanuric acid.


    For More Info See our Chlorine and Bromine eGuide:

    Chlorine and Bromine eGuide

    Read More | Download