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    Pool Algaecides

    1. 2 years ago
      Fabulous product
      I live in west tn the winters are mild. It gets warm under the tarp. I put the winter algrcide in at closing around the end of sept. & to be safe another bottle the end of jan its 20x40 inground. In the spring its algi free! can see 10 ft down & ready to open
    2. 4 years ago
      Great Winter Algaecide
      I buy the winterizing kit every year and a extra quart of winter algaecide to add in march never had a problem with the water when opening the pool. great products from in the swim
    3. 1 decade ago
      Not Perfect but Very Good
      My water was crystal clear, but I did have algae growth on bottom. I just couldn't get it to clean up when we opened. After a water test we found the phosphorus too high, so it looks like we had other issues. All is crystal clear now!
    1. 5 months ago
      Fantastic!
      This product is awesome. I have not dealt with algae since I first tried this product, 5 years ago.
    2. 1 year ago
      Incredible product!!
      I bought this a few weeks ago after trying everything else first. 2 days after using this product, not only was the algae completely eliminated but the water is clearer than it has ever been ! Highly recommended !!
    3. 1 year ago
      Poor it. Forget it.
      Easiest way to make sure you have algae under control for months.
    1. 8 years ago
      Really works on yellow algae!
      I have a 22,000 gallon pool, and my pool man told me to use 8 pounds of Yellow Out. I had been fighting my green pool for almost three weeks, adding hundreds of dollars of chemicals and running the pool continuously. Then, I added the Yellow Out by scoops, following each scoop with a scoop of chlorine. The next morning my pool was blue. I still needed to add clarifier to eliminate a little cloudiness, but what a relief!
    2. 1 decade ago
      Finaly something that works
      We (or a friend) brought mustard algae from the lake. I spent hundreds of dollars on other chemicals in the past 3 years to get reed of the algae but it kept coming back a couple times per year, especially when we forgot to run the Polaris for a week. I tried every algaecide I could find in the stores and pool supplies companies. That's when I sent an email to ask what product would work best for my well water, salt system inground vinyl pool. Yellow out is just fantastic, It killed mustard ... read more algae overnight like nothing I tried before, with less than 2 pounds of it! Hopefully it is gone for good! Untill somebody brings some from the lake again. Tip: Make sure you ask anybody ready to swim in your pool if they used their bathing suit in a pond, lake, river, sea etc... and if they washed their suit since. That's how we ended up with mustard algae in the first place. Great product, Thanks.
    3. 10 years ago
      BEST PRODUCT!!!!!!!!!!!!!!!!!!!!!!
      LAST WINTER I PUT A SOLAR COVER ON MY POOL, AS THE WINTER IS RELATIVELY MILD HERE. WHEN THAT COVER CAME OFF, MY POOL WAS SO GREEN IT LOOKED LIKE A LOUISIANA SWAMP! I WAS SOMEWHAT CONCERNED ON A CLEAN, CLEAR FUTURE FOR MY POOL. THE YELLOW OUT IS AN ALGAE PROBLEM SOLVER... AN UNDERSTATEMENT.. I USED IT WITH CHLORINE AND MY IN THE SWIM SHOCK. IT WAS INCREDIBLE JUST HOW GREAT THIS PRODUCT IS! FROM SWAMP TO CRYSTAL CLEAR! I'M SOLD. I WILL USE YELLOW OUT ALWAYS! IT WILL NOT LET YOU DOWN.
    1. 9 years ago
      GREAT PURCHASE
      THIS IS THE BEST ALGAECIDE! WHEN OTHER ALGAECIDE PRODUCTS FAIL YOU CAN COUNT ON THIS ONE TO MAKE YOUR POOL CLEAR AGAIN.
    2. 4 years ago
      This is the Holy Grail of Algaecides
      I had terrible problems with black algae spots that could not be killed by any other products. They resisted brushing, and even pressure washing in my drained pool. Upon re-filling my pool, the black algae came back to life. I found this product, added it to my pool according to directions, and it quickly killed the black algae once and for all. I now use this product to prevent any algae growth in my pool.
    3. 3 months ago
      Really works
      Used 2 quarts in a 22000 gallon pool with a medium amount of black algae. Scrub with metal brush first!
    1. 9 years ago
      Worked like a charm
      This spring the kids took the winter cover off without my help and got the filthy sludge from the cover in the pool, by the time I got it filled back up and everything back together a few days later we had a nice green mess in the pool, I knew it would take a fortune worth of chemicals to get it back, I even contemplated draining the whole pool and starting from scratch, but I saw this product and figured it was cheap enough to try. the next morning after putting it in the pool was cloudy and ... read more blue, a little claifier and a day or 2 later we were back in business. Worked great for me.
    2. 2 months ago
      Green to Clean-It Works
      We purchased Green to Clean because illness prevented us from opening the pool earlier as usual. In order to winterize we needed a clean pool. After cleaning and getting all of the levels of the chemicals right we added Green to Clean according to direction and it did a very good job of getting out the green algae. All that I can say is it does what is advertised.
    3. 7 years ago
      BEST PRODUCT EVER
      Our winter cover fell into the pool this year making our pool a complete green, swampy mess. We cleaned leaves, tadpoles, etc out of the pool and shocked it multiple times with very little results. Green pond, looking water. Green To Clean has shown wonderful results after about 8 hours. We are at the within about 17 hours the pool is only a little cloudy. I will purchase this product to open our pool every year!
    1. 1 decade ago
      Money Saver
      I bought this product and kept alittle maitainence dose in my pool. My frinds were still having algea problems with every little rain or after returning from vacation. But not me! It's great and I will buy it every year!!
    2. 3 years ago
      Algae clear
      It was weird, but welcome that it is not blue. That stuff stains and so far our pool is crystal clear.
    3. 4 years ago
      Algae Clear
      With the ugly weather we had this summer and turning cold overnight my pool was a mess. This product helped turn my pool back to the clear inviting pool it should be. Very effective and worth every penny.
    1. 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!
    2. 6 months ago
      Great price for great products.
      Great value compared to other places, glad I didn’t get price gouged by the chain stores.
    3. 1 year ago
      Excellent product
      Very happy with the results and easy of closing pool
    1. 1 decade ago
      Best purchase ever
      We've owned our pool for 4 years and I have to honestly say that this is the BEST product we have ever used. It keeps the water crystal clear. We have received so many compliments on how nice and clear our pool water is all the time. Just a small weekly treatment keeps our pool spotless! We would recommend this to everyone with a pool or spa!
    2. 10 years ago
      Great fixer for major algae problems
      Pool has been having major algae problems and has been cloudy. No matter how much algaecide, chlorine, and clarifier I use the pool is still cloudy and not sparkling blue. One application of this immediately fix the issue the next day. I only need to use this twice a year duting the summer season with bi-weekly shocking of the pool and had no more problems as the name implies.
    3. 8 years ago
      No Mor Money
      The recommended dosage is quite costly to keep up with and will require you to go thru several bottles in a season. It's active ingredient: ~40% sodium bromide...not sure why they can't tell you that in the specs, other than it's not all that special. I ran into problems with this stuff - the bottle doesn't really address if you have algae - I had to resort to a quat to take care of the problem. So, if you have a perfect pool and never get algae, this is for you. But I would highly recommend ... read more using a quat or copper-based algaecide in addition to or instead of this product. This is not the panacea it (and most reviewers) claim it to be!
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    In The Swim Knowledge Pool: Pool Algaecides

    In The Swim's Dr. Pool

    Why Use Pool Algaecides?

    While lack of proper circulation and out-of-balance water chemistry can lead to the growth of algae in pools, even carefully maintained swimming pools can sometimes experience algae growth. It is important to use an effective treatment as soon as an algae bloom appears in your pool and it's also a good idea to take measures to prevent algae from growing in your pool in the first place.


    For killing out of control algae blooms, look to Green to Clean and Yellow Out, natural and non-toxic chlorine enhancers that boost the killing power of chlorine pool shock. Small localized areas of algae can be eradicated with In The Swim Pool Algaecide, Algaecide 50 and Algaecide 60 Plus, and a stiff pool brush. For repeated algae blooms, step up protection with our Super Algaecide, No Mor Problems or Algae Clear for stubborn situations.

    Preventing Pool Algae

    •  1. Well balanced water, with proper pH, Alkalinity, Calcium Hardness and Stabilizer levels.
    •  2. Constant and consistent chlorine level of 1-3 ppm, along with regular superchlorination to 10+ ppm.
    •  3. An effective filter; run the pump each day for 12 hours daily, more or less, depending on effectiveness.
    •  4. A clean pool; brush, skim and vacuum to remove organic debris which contributes to algae problems.
    •  5. Monitor levels of phospates in the pool. Use a phosphate remover when levels exceed 300 ppb.

    If you do all of that, and still have algae - begin an algaecide treatment with weekly doses of our Pool AlgaecideAlgaecide 50 or Algaecide 60 Plus, to assist your chlorine to combat pool algae. Algaecides accomplish this by eroding the outer protective layers of the organism, allowing chlorine to penetrate into the cells.

    Killing Pool Algae

    •  1. Clean pool of debris with skimming, vacuuming and brushing pool.
    •  2. Adjust Alkalinity to 80-120 ppm, Calcium Hardness to 180+ ppm, pH to 7.2-7.3, and stabilizer to 20-50 ppm. 
    •  3. Add Pool Shock per label instructions.
      • - For light green algae with good visibility, add 1-2 lbs of shock per 10,000 gallons.
      • - For medium green pools with visible shallow end floor, add 2-3 lbs shock per 10,000 gallons.
      • - For dark green pools with very poor visibility, use Swamp Treat or Green to Clean with a triple-dose shock.
    •  4. Brush pool and run filter overnight (remove solar blanket covers while chlorine levels are high).
    •  5. In 12 hrs, check pH and chlorine levels. If chlorine has dropped to near zero, repeat treatment.
    •  6. Continue to run filter 24/7, cleaning filter only when filter pressure rises or flow rates decrease.
    •  7. Add a Clarifier after 2-3 days, to assist your filter in removing suspended particles.
    •  8. Add an Algaecide after 4-5 days, adding an initial dosage, followed by regular maintenance doses, per label. 
    •  9. Add a Filter Cleaner after 5-7 days, to remove algae particles trapped inside of sand or cartridge pool filters 

    In The Swim's swimming pool algaecides are highly effective products which will help you keep your pool water crystal clear and algae-free. Our powerful pool algaecide will reduce the need for pool shock treatments and are safe for all pool surfaces. In addition, In The Swim's special formulas will effectively eradicate and prevent the growth of all types of pool algae. Strong algae treatments can take your pool from cloudy to crystal clear in less than 24 hours. 

    For More Info See our Algaecide eGuide:

    Pool Algaecide eGuide

    Read More | Download