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    Pool Algaecides

    1. 5 months ago
    2. 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.....
    3. 1 decade ago
      Winterizing Wonders
      Third year now that I have used the In The Swim winterizing package for my in-ground pool. Works like a charm and saves the cost of hiring someone to do it for me. This spring, the water needed less attention than prior seasons due to addition of floating clorinator included in the package. Thanks for making opening easier but my former pool guy misses the business. Maybe he'll pay you not to sell your products ??
    1. 5 years ago
      Algaecide That Works!
      We were fighting a losing battle with algae in our pool. We tried many recommended brand name products, but couldn't get it under control. Then we tried 'In The Swim Algaecide' and our pool was crystal clear in no time. It's so easy to use - no mixing or measuring - just pour straight from the bottle around the perimeter of the pool. You'll see a huge improvement the same day.
    2. 1 decade ago
      Easy to use. Easy directions. Pool clear of algae. I even used to close pool.
    3. 1 decade ago
      STUFF WORKS GREAT
      I was very happy with this product, it really helped keep the pool algae free this summer. Thanks.
    1. 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.
    2. 1 decade 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. 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!
    1. 5 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.
    2. 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.
    3. 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!!
    1. 1 decade ago
      Wonderful Algaecide!
      18x36 in ground. Water murky, thick and visible green algae begining to show on steps: Time to close pool so used one whole bottle and expected to have to vacuum out a mess. The next morning the pool was crystal clear and no dead grey algae to vaccum out so I didn't. I threw in 5 lbs of super shock and closed her up. I love this algaecide!!!Will order more for opening next pool season!Oh yeah was here two days after I put in the order and no shipping fee just a handling fee
    2. 1 decade ago
      Algaecide 50 - Great Stuff
      I have been using "In The Swim" chemicals (Including Algaecide 50) to open and close my pool for (4) years now. Never a problem. I have friends that have to empty better than half the water each spring just to clean and get their pool ready. I have never had to drain any water. "Closing" and more importantly "opening" has always been flawless. I will continue using Algaecide 50 as well as all the other "In The Swim" chemicals. GREAT STUFF!
    3. 5 years ago
      SImply works
      Was told by someone 2 years ago I don't need algaecide and ever since had nothing but problems. Started this year and decided to try this out since I had yellow algae problems. One day after first treatment the algae was gone and my pool has never been more clear. I put a small amount in once a week and thus far have been algae free.
    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. 2 months ago
      It really works!!
      My Swimming Spa was 90% covered in black algae . It came overnight after a thunderstorm.I initially used 2x the recommend rate, nothing changed 3 days later I used 4x the recommended rate, nothing changed, 3 days later I used 6x the recommended rate, in 5 days my fiberglass swimming spa was totally clear. Unbelievable.!!!
    3. 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.
    1. 1 month ago
      Keeps your pool clear!
      I have used No Mor Problems for years now and I haven't found any algaecide that does any better in my opinion. It is so easy to distribute and the water and liner stays clean and clear throughout the season.
    2. 9 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!
    3. 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.
    1. 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.
    2. 3 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.
    3. 3 years ago
      Algae Problem??? NO PROBLEM!!!
      Been having horrible algae problems for the last two seasons. Tried everything - algaecide, super shock... NOTHING worked. Saw this product, and thought "what the heck...it's worth a shot." OMG ~ so glad I did. Liner is squeaky clean...haven't had that for three seasons! Highly recommend this product. It's been a sanity saver, and we're FINALLY enjoying the pool again.
    • 2019-07-22
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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