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    Natural Chemistry

    1. 2 months ago
      Cheap chemicals
      Phosfree worked great, we've had a pool for over 33 years , Never had to worry about using phosfree until the last few years.chemical companies are making the chemicals cheaper with phosphates thus costing us consumers money.Also watch out for cyanuric acid if this is to high you will have to drain your pool to get rid of it.its on tablets and shock.
    2. 1 decade ago
      Phos Free is a must to pool owners
      I had a pool build last year. I struggled with yellow algae to the tune of over $1,000.00 in a course of two months. I couldn't use the pool most of the summer. I went to several pool stores to purchase chemicals. I used banish and all sorts of things. I close pool for the winter and started over this year. To my amazement, finally someone told me about Phos Free. I mean in a matter of two days with a 20x40 pool and 16oz of Phos Free my pool is perfert. No more algae. I can't begin to tell you ... read more how fustrated I was. To anyone out there, I promise you; this is the best thing since the microwave.
    3. 9 years ago
      PhosFree Believer
      9 year user. Got first sample from my pool builder. I hate the dangerous chemicals in algaecides, and don't like the foamy water, algaecide taste or water ring from dead algae. Open pool with shock & algaecide. Vaccuum and clean the waste. Balance pH, test phosphate. Use phosfree if elevated, then weekly phosfree + pool perfect. Keeps water sparkling with no foam, no water ring and no algae, even through August. Will occaisonally add a dose for unusually hot weather or a lot of rain. (I don't ... read more find the spring / fall treatment to be useful. Even with use at recommended dose, still need algaecide to open.)
    1. 2 years ago
      Wow, the stain is gone
      I had to put a lot of well water into my pool this year. It left a brown stain on the walls and floor of my vinyl liner. I followed the directions and sprinkled the product into the pool onto the stains with the pump turned off in the evening and the pool chemicals at the levels indicated. I saw immediately there were dots where the product started working on the stain. I went to be hoping that it would at least get some of the stain off. When I went out in the morning the liner was a vibrant ... read more blue and the stain was 99 percent gone. Except for some spots on the walls and in the corners. I am putting metal free in today and will probably repeat the process just to get the very few remaining spots. Very satisfied with this product.
    2. 1 year ago
      Works great!
      Opened our fiberglass pool to metal stains-solid light brown stains everywhere the water was. Could not scrub off so we tried this. Sprinkled it in and the stain disappeared before our eyes. Went trough 2 bottles and had to order a 3rd but worth every penny!
    3. 1 year ago
      Works wonders!
      It completely removed all stains, even hard water rust from the liner within 24 hours.
    1. 5 years ago
      Great Idea
      In our California drought conditions, I am trying out this Coverfree product to reduce evaporation from my pool. In the last 2 weeks or so I think the evaporation rate has dropped by about half. So far so good.
    2. 5 years ago
      Good product for your swimming pool!
      Good Product!! it's great for my pool and give my pool so hot!
    3. 5 years ago
      We are so DELIGHTED with this product!!!
      We added 6oz. to our large pool, during cycling. It conserved water evaporation SO much better than we could have predicted. It got up to 104* for 3 days, then dropped into the high 90's this past week. The pool is in direct sunlight and I would have needed to top it off, at least twice by now. The temperature (no heater) has rapidly reached & maintained a 5-7* increase in warmth. We will be able to use the pool much more often & that makes us happy!! It was a bummer when the water temperature ... read more was too cold & hot outside!! With Cover/free, so far, Sunday to Thursday before a small top off is needed. There is no residue on your skin. No odor. It is important to us that the product is "friendly". A huge plus, is there's NO ugly pool cover & crank to deal with. Leaving a lovely play area, ready for play!!! We LOVE it & will buy it again!
    1. 1 decade ago
      Excellent product
      I have used Pool Magic for several years now and it has proven to be an extremely effective treatment to jump start my pool opening. I also use it to close up the pool in the fall. Well worth using.
    2. 1 decade ago
      Great Product
      This was recommend by our pool installation contractor. We tried the Pool magic and have used it for the last five seasons.
    3. 1 decade ago
      Crystal clear pool on spring opening
      We've been using this product for 3 years (after a horrible experience opening our pool) and we wouldn't close or open our pool without it now. Great product.
    1. 1 year ago
      best product i ever used in my spa.i've had hot tubs for over 12 years and this works the best ever....
    2. 2 years ago
      amzing quality
      I buy this item all the time its amazing for even commercial pools.
    3. 3 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!
    1. 2 years ago
      Seems to work
      Due to lots of rain and water temperatures around 95, we were getting heavy algae requiring frequent cleaning and diatomaceous filter changes. After through cleaning and shocking I used the recommended amount of algaecide and after 10 days no algae or filter changes. HOWEVER, the water is no longer crystal clear; it has a yellowish tint.
    2. 2 years ago
      Fabulous product
      I have bought many many products over 15 years to get rid of algae on our pool walls. Brushed the walls regularly. This product WORKS. It Cleared the pool and it has been clear for 2 months. I love this product.
    3. 3 years ago
      Seaklear 90 day pool algae prevention and remover
      Have used this product for the past several years, the best ever keeps pool spotless of algae, put in half bottle every 3 mths. need little to no other chemicals except tabs and some chlorine.
    1. 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
    2. 1 week ago
      Great product
      Using well water rich in iron to fill or add water to the pool causes the water to turn brown when it comes in contact with the chlorine Metal out has worked great to clear this up almost overnight will continue to use this product as needed to keep pool water clear
    3. 10 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! :)
    1. 4 weeks ago
      Excellent product fo pool water keep crystal clear
      Very good product...I’ve been very happy with this product ‘s ability to prevent algae growth. I used in a pool that is 16x32 it is the best thing I have ever use to clear pool water.
    2. 1 decade ago
      Once a Week Wonder!
      If you want the BEST looking pool possible and also want to reduce the time you spend to make it that way, this is the product you need! I'm not kidding! I live in the midwest so our pool is only open from Memorial Day to October. The last two seasons after the initial pool cleaning/vacuuming, I've used PH Perfect & PhosFree and it has eliminated the necessity of virtually all other chemicals, except chlorine tabs and an occasional dose of PH increaser after a heavy rain. Before I switched to PH ... read more Perfect & PhosFree, I always had some degree of algae form, but NOT ANY MORE! All I do is add 4 capfuls into the filter every weekend. That's it! You will not be disappointed!
    3. 2 weeks ago
      Great product
      Ive been using pool perfect +phos free for 6-7 yrs now. No algae and the water is crystal clear all season. Every spring when opening pool water is clear, just turn on pump and pools ready.
    • 2019-07-22
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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-Zymes™ 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.