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    Natural Chemistry

    1. 4 years ago
      Works Great
      This well be the third year that we are using POOL MAGIC. Pool has been very clear each spring opening
    2. 1 decade ago
      The name says it all! MAGIC!
      We use this product when closing and opening our pool. Before we started using this product we always had a water scum line when we opened the pool. The enzymes in this product break down organics, which prevent scum-line formation. No more scrubby mitt clean-up! This product makes spring clean easy and enjoyable! Highly recommend this product.
    3. 8 years ago
      Excellent!! Great for FL summer rains too!
      This product effectivly removes phosphates from our water, we only had problem in the summer storm season here inFL, so now we use one at the beginning of the storm season and voila! No more shocking needed! We try to keep it up with regular phos free, but this certainly helps when you forget or are gonna be away!
    1. 3 years ago
      This stuff really works!
      I bought my house more than 20 years ago, & it came with an unground pool. I had no idea how to care for the pool, & had to learn as I went along. At different times I had problems with every kind of algae. I bought a "deluxe" start up kit which came with a bottle of Pool Perferct with Phos Free. I started using it every year and problem solved! I use it every week, & when I first add it to the skimmer & go in the pool it feels like slipping between satin sheets!
    2. 1 decade ago
      Great Product!
      Until we began using this product, we had recurrent problems with algae, no matter what algacide we used, or how we cleaned the filtration system. Once the problem of phosphates being present in the water was addressed, through the use of Phos Free and then Pool Perfect with Phos Free, we have had essentially no problems with algae for over three years. Before then, we battled yellow algae throughout the season, as well as having problems when the pool was first opened. Just remember to always ... read more soak your DE fingers every 4 weeks in muriatic acid regardless of how little your pool is used.
    3. 1 decade ago
      So Easy to Use
      I've never had to keep the pool going on my own before and after ignoring it for a few days during a heat wave found it a radioactive green! I doubled the amount of PhosFree in the skimmer and added a gallon of shock. Two hours later the pool color was back to normal and almost clear. Now I use PhosFree weekly like I'm supposed to and have had absolutely no problems.
    1. 1 decade ago
      FINALLY Something that works!!!!
      We've spent the last 4 weeks trying to get our pool clear. After many many trips to the pool store, lots of money spent and still no results, I saw this and decided what the heck. I was very skeptical as I've spent a whole lot more money without any results. Product came today after ordering yesterday. I put this in at 11 am. Went back out at 4 p.m. and to my amazement, THE POOL IS CLEAR!!!!! Will never be without this product. Thanks for such a great way to finally be able to see clearly.
    2. 1 decade ago
      Best Purchase
      I have been trying for 2 months to clear up our pool. Nothing had worked until I tried this product. Our pool was blue but still cloudy and the more chemical we put in the worse it got until First Aid. I can now see the bottom of my pool!
    3. 6 years ago
      SIMPLY AMAZING
      I was having trouble with my pool water turning milky white.I spent about $110 at the local pool store using their products with no luck.As a last resort i took a chace with this product and i am very impressed.After just one day i could finally see the steps on my ladder and by day two i could see the floor of the pool.After a second dose the pool was CRYSTAL CLEAR....This is the best product ever.I will make sure i always have this on hand during the summer....
    1. 2 years ago
      As good as ever!!!
      This is probably the third time that I have purchased this product. It continues to be so easy to use and does the job!
    2. 6 months ago
      best product i ever used in my spa.i've had hot tubs for over 12 years and this works the best ever....
    3. 1 year ago
      amzing quality
      I buy this item all the time its amazing for even commercial pools.
    1. 8 months ago
      SeaClear
      This stuff really took the green out! It helped the water to clear out
    2. 2 years ago
      Great results
      I bought this product and it only take 1 oz to keep my 7500 gallon pool clear and clean.
    3. 2 years ago
      Works very well.
      Good product. Works very well in our above ground pool.
    1. 9 years ago
      Pool savior
      I have been using Metal Free for several years now and it is an outstanding product, it really helps to keep the copper stain away from our fiberglass in-ground pool. In addition, the price that In the Swim charges is much lower than local pool stores and the product arrived the next day! :)
    2. 9 years ago
      Iron in our water
      Bought the Stain Away and the Metal Free, used it according to the directions and my water is like it should be except for cloudiness. Another reviewer suggests putting in clarifier which I am about to do. Our Kempner Water Supply co-op has lots of iron in the water that they distribute to us, (water looks like brownish urine when new pool water is filled) and when you shock/chlorinate the pool, it immediately turns like brown nasty water, because chlorine oxidizes the iron content. These two ... read more products are a Godsend to all pool owners! I will continue to buy this and continue to dose my pool when topping it off as it suggests to do. No more brown water!!! Yeahhhhhhhhh
    3. 1 decade ago
      Metal Free
      I have been bouncing back and forth with a phosphate problem in my fiberglass pool. Turns out, the pool store was selling me a product with prosphates in it for the stain removal. Therefore, the phosphate level kept rising. Months later, I discovered what was happening and immediately looked for a stain remover with no phosphates. I found Metal Free on the In the Swim website. I bought it, put it in the pool following the directions on the bottle and had my water tested. IT WORKED!! Metal Free ... read more cleared up the stain and no phospates in the pool........
    1. 6 years ago
      no green
      We have a salt water pool and nothing work to get the algie out. all levels of cemmicals were where they should be, our pool is in the sun all day and rain would turn it green every time this is the only thing that got the pool clean and clear all summer long. have told other people with same problem about this and it also worked for them in a chorinated pool. it works!!!!!!!!!!!!!
    2. 3 years ago
      Ring around pool gone in salt pool, no more algae
      Very large deep salt pool always had problem with a couple walls accumulating yellowish clouds or a film of algae that even pool services could not rid. Also accumulated very ugly white thick ring of calcium? Even acid would not remove without etching beautiful tile. Ring and problems GONE IN MY SPARKING CLEAR POOL, ONE CAP FULL A WEEK, 1 1/2 3 liter bottleS of PHOSFREE later, I STARTED WITH ONE CAP FULL AND NEVER INCREASED THE QUANTITY. NO ALGEa AND RING DISAPPEARED WITH NO SCRUBBING AND ... read more CHLORINATOR NO longer REQUIRING LOTS OF CLEANING. Even use less acid. Got immediate clear results and took couple months for ring to dissolve. Your sale was a nice break for me, I will stick with you thanks.
    3. 10 years ago
      No More Algae Worries. Period.
      This is the second year that I have used Phos Free in my pool. I have to say it is the most amazing, time and money saving product that I have used in my pool. I have had no problem with algae, the pool is cleaner, I use far less chemicals, the water simply sparkles and is as clear as a bell. My usual two to three week pool opening this year was reduced to 5 days (using a lot less chemicals and $) thanks to closing last year and opening with Phos Free this year. It is worth adding to your weekly ... read more routine. In the long run this product more than pays for itself by using fewer chemicals season long. I am a believer and have the $ to show for it! Good luck. On a side note - the water is so clear after using this product that I can see the smallest spec in the deep end - it is like crystal!
    1. 3 months ago
      It's hotter than a solar blanket....Easy to Use.
      Keeps temperature up, controls loss of heat, so easy to use. No more solar blankets needed!
    2. 3 years ago
      Excellent service
      This is a great product. Pool temperature started increasing shortly after use. The containers leaked slightly during delivery. In the Swim replaced both containers without question and I received them the next day!! Awesome!
    3. 5 years ago
      Good product for your swimming pool!
      Good Product!! it's great for my pool and give my pool so hot!
    • 2019-01-20
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    In The Swim Knowledge Pool: Natural Chemistry

    In The Swim's Dr. Pool

    Eco Friendly Pools and Natural Chemistry

    From pool openings to pool closings and every wonderful summer day in between, Natural Chemistry products work effectively with chlorine-based chemicals by employing natural occurring enzymes that eliminate oils and organics in your pool water. In The Swim has all of the Natural Chemistry pool clarifiers, pool enzymes, pool stain removers and preventers, phosphate removers, instant pool conditioners, and liquid solar cover - the entire product line!


    Natural Chemistry Enzymes

    Natural Chemistry enzymes have been perfected over 25 years, and today's Smart-Zymesâ„¢ are better than ever. Enzymes are the natural and safe way to break down oils and non-living organics in the pool while preventing stains from metals and organic debris. Enzymes also clean your pool filter, naturally. Natural Chemistry Pool Perfect is the original pool enzyme formula, quickly joined by enzyme/clarifier blends like Pool First Aid, or Pool Magic, and Pool Perfect + PhosFree


    Natural Chemistry Phosphate Removers

    Phosphates can enter a pool from many sources, and when levels exceed 300 ppb, we recommend PhosFree, or a blend such as Pool Perfect + PhosFree, and Pool Magic + PhosFree, to remove phosphates from your pool water. Pool phosphates are a primary food source for algae, and if  your pool opens green each spring, or if you deal with algae blooms every summer, you can test for phosphates, and treat with Natural Chemistry PhosFree, naturally. 


    Natural Chemistry Stain Fighters

    From the very beginning, Natural Chemistry has provided a way to deal with mineral scale and metal staining in pools, naturally. Natural pool chemicals like Metal Free and Scale Free are phosphate-free sequestering agents that will prevent stains by keeping minerals and metals safely dissolved in solution. For all-natural pool stain removal, nothing is closer to nature than Vitamin C, which also happens to be an effective pool stain remover. 100% ascorbic acid, available in Natural Chemistry's Stain Free and Stain Free Extra Strength formulas. 


    Natural Chemistry logo

    Other Natural Chemistry Formulas

    Natural Chemistry Instant Pool Water Conditioner, for pools that want to protect chlorine from the sun, but want to keep cyanuric acid levels low. Contains only 1.5% cyanuric acid, yet will register normal tests for cya, and protect your chlorine just as well. 

    Natural Chemistry COVERfree liquid solar blanket, liquid solar blankets use monolayer technology to trap heat in the pool, and reduce evaporation. An invisible layer of natural polymers forms an invisible shield over the water surface to save heat and water. 

    Natural Chemistry Filter Perfect, a natural enzyme based cleaner for all pool filter types. Removes oils, scales and gunk of all types from filter cartridges, sand filter beds and DE filter grids. Natural filter cleaner is gentle but effective, restoring performance to your filter. 


    And beyond Natural Chemistry pool products helping you feel better in the pool, Natural Chemistry pool products are always bio-degradable and environmentally friendly. They won't replace the need for a chlorine sanitizer, but reduce the amount of solids in the pool, removing organic and oily matter, to reduce your chlorine demand, or keep your pool cleaner and clearer, with less chlorine needed.