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    Pool Algaecides

    1. 1 month ago
      Awesome
      My pool had algae for over a month and I spent well over $500 trying to clear it up. I put this in it and all the algae clumps together and then you vacuum to waste. Just wish I had tried this sooner.
    2. 9 years ago
      Great alge solver
      Tried this product because when I opened the pool was a swamp. I was shocked how fast it worked and it turned my pool from green to gray with in 20 min. Just make sure you have enough shock because you need to shock your pool 3 times. I agree with other people you also need to use a clarifier to clear it up. I will use this product again. I have recommend it to all my friends a family who have a alge problem with their pool.
    3. 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!
    1. 2 years ago
      Cleared the pool. when algae 60 failed.
      Bought this after alge 60 failed to change my pool. Turned a white cloudy left on vacation for a week and came back to s clear pool
    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. 2 years ago
      bye bye green swamp
      My pool when from emerald green to azure in 36 hours. perfect!
    1. 1 month ago
      Works Great
      it is important to note that the chemistry involved is VERY pH sensitive . If you do not jack up the pH significantly above neutral it probably won't work or at least not as well. the ammonium sulfate is a salt of a strong acid so it will not work in low pH.
    2. 3 months ago
      Wonderful !!
      Our pool was dark green with a layer of scum on top. We worked hard to get it clean to no avail. I was ready to give up and drain it . I ordered this product as a one last ditch effort . The first treatment didn’t work , the next day we put the rest of it in and by the next morning , the green was gone !! I couldn’t believe it when my husband called me out to look at it ! This product really works and now we are enjoying our pool= green free !!
    3. 2 months ago
      Green to clean INDEED!
      Our pool had been green for 2 weeks / we tried EVERYTHING. My lovely wife researched and found this great product. We found it at our local “lighthouse “ pools we used it as directed.12 hours later it was perfect!
    1. 9 years ago
      It Really Works
      I have had a real problem with Green Algae. My pool is exposed to direct sunlight all day. After several treatments of Shock and Algaecide. This product along with periodic shock treatment has kept it under control and looking great. All my pool chemicals and equipment are from In-The-Swim. They have the best prices and you can depend on fast delivery.
    2. 9 years ago
      AMAZING!!!!
      This product is amazing! We lived with a murky pool all last summer, and the pool store was telling us everything was fine. This year our pool was green when we opened it and after spending at least $400 on products from our local stores (yes, we used 2 different stores) we still had a murky pool that wouldn't stay balanced, and "silt" was constantly appearring. We were told we must need to replace our sand or our filter. We then ordered No Mor Problems and watched our pool fix itself before our ... read more eyes! Within 3 days we had a beautiful pool! Two months later, our water clarity is still brilliant! All we do is treat with this product weekly and add chlorine tabs. No more copper algeacide, super blue, shock! Give it a try!!! It's well worth it!!!
    3. 4 years ago
      8 years of perfect clarity
      I started using No Mor Problems 8 years ago in our 10,000 gallon above-ground pool and it has performed perfectly. I use 2 1/2 ounces once a week and NEVER have algae problems. The only two times I have had an algae bloom was when I skipped the once-weekly application. Each time about a week after the missed dosing, the pool became a murky green, but cleared up in a few days after starting treatment again. If you are consistent, this product is very affordable. Small, regular doses keep algae in ... read more check and the water is really sparkling clear.
    1. 1 month ago
      Wonderful
      Best algaecide ever! My pool water looks just as clear at spring time opening as it did at fall closing! I would not use any other brand!
    2. 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!
    3. 4 years ago
      Winter Algaecide
      Helps keep the pool water from becoming green over the winter months.
    1. 3 years ago
      great. timing
      We are having a cool wet summer. The algee was hard to control. I ordered your 90 day treatment on Thursday A.M.. I received it on Friday. It is GREAT, Thanks
    2. 2 months ago
      Works as described
      One day after adding the green was gone! Extremely happy
    3. 1 year ago
      Poor it. Forget it.
      Easiest way to make sure you have algae under control for months.
    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. 1 year ago
      Great kit!
      This kit is perfect for keeping our pool clear! It makes maintenance a snap!
    3. 1 year ago
      Excellent product
      Very happy with the results and easy of closing pool
    1. 6 years ago
      Keep fighting it
      Black algae is a scourge of old pools. It gets in the gunnite and there is basically nothing you can do. You just have to keep pouring in the chemicals and watching your pool laugh at you. I am here to tell you no black algeacide works to eradicate. They all work to help control. Some are a little better than others. This one is fine. I have not seen a big difference in the super expensive black algaecides that are sold. It's all about how much active product is in the bottle. If you have black ... read more algae in your pool, my sympathies, just learn to live with it and be so happy on those days when your water looks clear and sparkling and you beging to kid yourself that it's over. It's not. Keep a bottle of algaecide close at hand at all times. Good luck!
    2. 2 months ago
      Really works
      Used 2 quarts in a 22000 gallon pool with a medium amount of black algae. Scrub with metal brush first!
    3. 3 months ago
      Great product
      As with any kind of algae you have to work at it! First I use pool shock which I pour liberally over the areas worst affected. 24 hrs later scrub. Then I use an entire bottle and retreat with half a bottle if necessary, the next day. This works. It was recommended by a pool guy who has been doing pools for over 35 years, not me! Just sayin!
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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