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    Pool Algaecides

    1. 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
    2. 4 years ago
      Excellent product!
      Easiest shut down so far with a blue pool! Cant wail to try more of the products.
    3. 4 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.....
    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. 1 decade ago
      Saved Me Mega Money and Time
      Two years ago....after being gone for three weeks (and having some attention by my house sitter) my pool got totally out of control. Mega algae bloom. After much effort.......I was told that by pool maintenance pros that I would have to replace the water and possibly the sand in the filter. Replacing the water did not solve the problem.....yellow algae started to return and I was facing about $1000 to change out the sand in my filter. Fortunately No Mor Problems was recommended. I have not had a ... read more problem since. Very good product....use it weekly......outstanding!!
    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 decade ago
      Green To Clean FAST!
      Due to a hurricane and alot of rain our pool was left with alot of debris, and with the hot , humid temperatures we had a major algae bloom within a couple of days. By the time we got power back the pool was green from top to bottom. I had ordered this product with my usual order of chlorine just to have on hand. Within a little over a day we had our pool back to normal. I really did not think it would clear it that fast, but it did. It is part of my pool staples now every year. And the price is ... read more excellent compared to a walk-in store.
    2. 3 years ago
      Does exactly what it says!!
      Bought this product while looking to buy a pool cover. My pool looked like a green swamp after a long period of rain and warm weather. Needless to say that I'm a firm believer in the saying that anything to good to be true usually is. All I have to say is WOW!! This stuff is fantastic. Poured the product around the edge of the pool and in 2 days water was crystal clear. No scrubbing needed.Worked so well I immediately ordered another container! Get this, you won't be disappointed!!
    3. 4 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.
    1. 5 months ago
      Works as described
      One day after adding the green was gone! Extremely happy
    2. 3 years ago
      The BEST algaecide ever!
      I started using this product about 5 years ago to get rid of a huge algae bloom. Nothing had worked up until then. The SeaKlear was nothing short of amazing. I use 1/2 a bottle every 3 months along with In the Swim super shock and I have the clearest water all the time.
    3. 2 years 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 !!
    1. 5 months ago
      Worked fast
      I had a few patches of yellow algae on the plaster walls of my pool that other algaecides never quite got rid of. I brushed the affected areas, added Yellow Out and did a chlorine shock. The walls and water looked great the next morning! I was surprised the chlorine went from 10 ppm to 0 ppm overnight, but I just added a few more pounds of chlorine and now it is stable 2 ppm. The algae has not come back for two weeks! If it stays away two more, I will definitely buy Yellow Out again.
    2. 9 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!
    3. 8 years ago
      Best Purchase Ever
      I neglected my pool for over a month and of course I ended up with a horrible algae problem. I tried shocking it several times with many lbs of super shock as well as other expensive algae treatments. I thought I was going to have to drain the pool. I purchased yellow out along with some more shock and followed the very simple instructions. 16 hrs later, no more algae! I would also like to mention that after recieving my yellow out and reading the instructions, I called Coral Seas to make sure ... read more that I could use the product immediately as I had shocked the pool 2 hrs previous. They put me in touch with Sam (the CEO) who was very friendly and beyond helpful. He even ask that I call him back the next day with an update. How's that for customer service! How many times do we find a company who really cares about their customers anymore? It restored my faith :)
    1. 1 year ago
      Excellent product
      Very happy with the results and easy of closing pool
    2. 8 months ago
      Great Value
      We always get our pool products here and are never disappointed.
    3. 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!
    1. 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.
    2. 6 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!
    3. 1 decade ago
      Finally--a product that worked!
      For some reason this summer, we got a huge outbreak of algae and nothing we had used in the past would break it up. We dosed the pool with this black algaecide and within one dose we had a cleared problem.
    1. 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.
    2. 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.
    3. 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
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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