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    Pool Algaecides

    1. 3 years ago
      Best Algaecide on the market
      We have used this product for at least 8 years straight now and no other product works as efficiently as this. It is costly but no other products are needed as others that need an additional product to eliminate the foam.
    2. 3 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
    3. 4 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.
    1. 1 year ago
      Finishing touch
      I've been battling the cleanup of algae for a year. Our (fired) pool service did nothing for it except to add more and more liquid chlorine. We've used several products that have been working, but we just couldn't get rid of all of it. We decided to give this product a shot. I put it in last night, then the powder chlorine, 12 hours later, more powder chlorine. Tonight I only had 3 small spots of algae left. I have 1 more time with the powder chlorine and I think we'll have it licked. I wish I'd ... read more started with this product a year ago.
    2. 1 year ago
      Hotel pool
      I had diagnosed mustard algae to my boss three days prior to a huge algae explosion and causing us to close the pool. I applied the 4 pound container and 2 standard shock treatments. Within 6 hours the water had turned blue again with no brushing required. The next morning the cloudiness had cleared up. Amazing, made me look good as a new employee to upper management.
    3. 1 decade 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.
    1. 1 decade 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.
    2. 8 years ago
      Amazing Product
      I used 4 lbs of Yellow Out and 4 lbs of shock and it changed my pool water from green to clear blue. This is the best product I have ever used for getting rid of algae. Don't bother with going to a pool store and buying expensive chemicals. Just follow the instructions on Yellow Out and it will give you something to shout about. My pool look better than it has in years. I am thankful i found this product and will keep some on hand.
    3. 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.
    1. 3 years ago
      It works well!
      Have used this in the past and it works well enough to purchase again. It devastates any returning black algae. I had it speckled all over when I went to open my pool 2 years ago. Nothing worked till this. I did scrub all over once I put it in the first time. The algae let go and was swept up and away.
    2. 1 year 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!
    3. 1 decade 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.
    1. 4 months ago
      Algacide
      Used SeaKlear last year, applied once in June and the pool stayed algae free for the entire season. Doing it again this year.
    2. 3 weeks ago
      It works!
      It took about a week to go into full effect but after a 2 month battle with algae, my pool has been completely algae free for almost a month now!
    3. 2 months ago
      So Far So Good
      My pool has never look so good so far I am super happy and I hope that the results are good for the rest of the season highly highly recommend this product
    1. 5 years ago
      Winter Algaecide
      I have been using the In the swim winter algaecide for about 12 years.... Works great... I put one quart in at closing and I add a quart about ten day before I open the pool in the spring.....
    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. 5 months ago
    1. 10 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!!!
    2. 5 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.
    3. 3 years ago
      BEST pool product hands-down!
      I started using No Mor Problems a few years ago and I'm telling you, it really is THE BEST pool product you can use for keeping your pool clear the entire season! I used to take trip after trip to the pool store to have my water checked because I couldn't get my pool levels right. Since using No Mor Problems I haven't had my water checked one time! It is sold as an algaecide, but really it's just the clear pool catalyst. The only thing I ever have to add is shock and soda ash to raise the PH. ... read more Needless to say, it is an aptly named product.
    1. 1 week ago
      Good shock, black discoloration
      Good shock, but for the first time ever, I had black discoloration on my plastered surface where the undissolved granules hit the surface in a shallow end. Fortunately resolved after 12 hours of circulation.
    2. 1 month ago
      Very convenient
      Like that I can get the basics all in one package deal.
    3. 2 years 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!
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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