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    Pool Opening Chemicals

    1. 1 month ago
      Best I've found!
      We have used In the Swim Shock for many years now. It's always the best value, and works every time.
    2. 1 month ago
      Just What I ordered
      Just what I ordered. I like using calcium based shock to help PH control. Good price.
    3. 1 month ago
      shock your pool
      Strong enough to clean but works fast enough to go swimming soon after applying
    1. 9 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.
    2. 4 years 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!!
    3. 2 months ago
      Easy to use.
      We bought this at the beginning of summer for a good price and it is easy to use. We have a 28ft. Round pool, we just add 2 1 lb bags each week.
    1. 1 decade ago
      This product truly works
      I have a large concrete pool with a connecting spa. My spa and pool steps always turned a disgusting brown in the hottest parts of summer even if the chemicals were good. A kid at our local pool store sold me this (for $56!!!) and it worked instantly. I subsequently have bought it from In The Swim because of the more reasonable price. It does work best if you turn off your pool pump for a little while and let it settle. I usually get out my brush and brush it around, then turn the pump back on.
    2. 10 years ago
      Works like a charm!
      Last year I had the worst brownish-orange stains all over the sides and bottom of my pool. I researched the heck out of it on the internet and found some website that said if a crushed vitamin C tablet rubbed on the stain makes it come out, then it is a mineral stain. But then it gave some crazy instructions for treating the whole pool. After some more research, I came upon Stain Free, which is "Vitamin C for your pool". It works FAST and effectively and completely ridded my pool of the stain ... read more (that had been there for several weeks) within a few hours. It has worked just as well at removing leaf stains (from when leaves sit at the bottom of the pool too long). I love this stuff, just wish it came in a bigger container. I would love to buy it in bulk!
    3. 8 years ago
      It worked!
      I used this product, one 2 lb. container, in my 25,000 gallon pool. I did not use the Metal free as instructed and my pool liner, return lines and skimmer were cleaner than they had been since I can remember (our pool is 29 years old, the liner is 13 years old). I did need to apply a month later and now it needs to be done again. But I will try the Metal free with it the next time. But for only $30.00 I was quite satisfied with the results.
    1. 2 weeks ago
      No longer best deal on the internet
      only 3 stars due to increased price and only 70% available chlorine
    2. 2 years ago
      Great Pool Chemicals
      I have used In The Swim Pool Chemicals for about 10 years. I have used other chemicals when I would run out and need some right now, the other chemicals do not work as well as these do. I have had 2 friends buy pools and they use In The Swim Pool Chemicals also. I have another friend that converted to them and a nephew now that just ordered his first supply. I will never use anything else. Thank You In The Swim Rick
    3. 4 months ago
      Great Value
      This product works perfectly and is exactly the same as you would find in your local pool supply store at 1/2 the cost. I’ve now invested in several chemicals from In The Swim with the same results I’ve always had with Bio Guard. I’ve found that the name just doesn’t matter. It’s just a matter of matching up the chemical makeup in the products offered here and the same results are achieved at a much lower cost.
    1. 5 months ago
      Great Value
      We always get our pool products here and are never disappointed.
    2. 1 year 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. 5 months ago
      Great price for great products.
      Great value compared to other places, glad I didn’t get price gouged by the chain stores.
    1. 3 years ago
      Good water test kit
      The 4 way test kit is essential for all pool owners if you want to avoid water problems and expensive treatments to correct them. This kit is easy to use.
    2. 4 months ago
      Pool water test kit
      Easy to use and very accurate. I have always use test strips in the past and they did not perform well. With this test kit, I know exactly what chemicals to add to keep my pool perfectly in balance.
    3. 1 decade ago
      Better then the dipsticks
      I used to use the dipsticks, they dont show you if your levels are low or high.. This test kit shows you if your : "Free" chlorine Total chlorine pH Alkalinity Is low or high so you can adjust. This is most important tools you can use. It's either Scrub or SWIM ! I prefer to swim so this is one of my tools.
    1. 1 year ago
      Love these, work great and saves me money on chemicals.
    2. 2 years ago
      Love this please try is great water is clear and s
      Great job easy love it no hassle and water looks great
    3. 2 years ago
      Love this value pack!
      I was very weary of using this over the winter instead of the other chemicals we usually winterize with in the past. Our pool water was fresh and clear when we removed the pool cover a month ago. We have used the spring pill for startup and one summer pull this far into the summer. Very pleased with these products and super easy to maintain the pool.
    1. 3 years ago
      Their the best!
      I bought a month early to take advantage of the great sale In the Swim was having. The start up kit makes it easy and takes all the guess work out of opening your pool. Since I've started using the Pool Start-Up kit ( 3 years) I have never had issues with opening up the pool.I wish I would have used it the previous 17 years! In the Swim continue to have great customer service and fast shipping.
    2. 4 months ago
      Fantastic Start Up Kit!
      Every year we buy the Start Up Kit for our pool and it makes the opening of our pool a breeze. It comes with everything you need to get the pool up and running and ready to SWIM!!! Little hint: Buy the Closing Kit it helps with the Start Up also!!
    3. 5 months ago
      Amazing Pool Start-up with Powerful Chlorine Shock
      Every year we purchase In the Swim' s start up kit. Since I was downsizing and planning on selling my home, last summer we did not open our 16x32 pool. I even thought the house would sell quickly so I didn't even put any chemicals in the covered pool. Well, it's finally selling at the end of May and the buyers wanted us to open the pool, start the filter, etc. so they could have the pool and equipment inspected. We opened the pool, water didn't look that bad. We vacuumed, put in chemicals to ... read more get it going... voila... within the days it was Crystal clear and swim-ready! These products always perform as expected, but this time they really went way beyond our expectations!!!
    • 2018-10-22
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