Yellow Out
Coral Seas

Yellow Out

108 ratings
Yellow OutYellow OutYellow Out for Swimming PoolsCoral Seas YELLOWOUT Yellow Out Pool Algaecide 2 LbsYellow Out
Size2 x 2 lb.

Key item features

  • Algae Cleanup: Yellow Out provides amazing cleanup results for yellow algae when used with an EPA-Registered chlorinating compound that targets green or mustard algae.
  • Chemical Composition: This product is a chemical breakthrough with no metals added, making it safe for use with all pool surfaces.
  • Performance Conditions: It remains effective even with high levels of cyanuric acid and is compatible with salt chlorine generators.
  • Rapid Action: Achieves algae cleanup quickly, transforming pools from green to clean within 24 hours without the need for brushing.
  • Usage Instructions: The recommended dosage is 2 lbs. per 15,000 gallons of water, with continuous filter operation for 24 hours post-application.
  • Application Precautions: Yellow Out should not be pre-mixed with chlorine or other chemicals, nor added directly into skimmer baskets or filter suction lines.
  • Algaecide Reduction: Regular use can help reduce the need for algaecides, which can potentially stain pool surfaces.
Generated by AI

Specs

Chemical standard type, AlgicideForm, PowderWeight, 4 lbRec. use, Swimming PoolPool chemical type, Chlorine Pool ChemicalsBrand, Coral Seas

About this item

Product details

Yellow Out - 2 x 2 lb.Achieves algae clean-up quickly and economically, from green to clean in 24 hours with no brushing. Guaranteed! Regular use of Yellow Out can also help reduce algaecide use that can stain pool surfaces. Recommended dosage: 2 lbs. per 15,000 gallons of water, concentrating on problem areas. Run filter continuously for 24 hours after adding. Yellow Out should never be pre-mixed with chlorine or other chemicals, nor should it be added directly into skimmer basket or filter suction line. Compatible with salt generators. Yellow Out - 2 x 2 lb.

  • Amazing Yellow Algae Cleanup Results!
  • Yellow Out is a chemical breakthrough! Amazing cleanup results when used prior to shock treatment with an EPA-Registered chlorinating compound that kills green or mustard algae.
  • Not affected by high levels of cyanuric acid and works well with salt chlorine generators!
  • NO metals added, can be used with ALL pool surfaces! Dosage: 2 lbs. per 15,000 gallons of pool water.
    info:
    We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

    Specifications

    Chemical standard type

    Algicide

    Form

    Powder

    Weight

    4 lb

    Rec. use

    Swimming Pool

    Warranty

    Warranty information

    Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

    Warnings

    Customer ratings & reviews

    4.4 out of 5 stars
    stars
    108 ratings58 reviews
    Includes global ratings and reviews
    How item rating is calculated
    1. 5 stars73% (79)
    2. 4 stars8% (9)
    3. 3 stars8% (9)
    4. 2 stars3% (3)
    5. 1 star7% (8)

    Reviews summary

    Pros

    • : It activates quickly and follows clear directions.
    • : Quickly eliminates yellow and mustard algae from pool walls and water.
    • : Offers similar prices to other retailers.
    Generated by AI
    Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
    Sort by |

    Showing 1-3 of 58 reviews

    Oct 19, 2026
    Reviewer name: Donald
    Item details
    Size: 3.81" x 3.83" x 7.25"
    Sold and shipped byDohenys PoolSuppliesSuperstore
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Yellow Out very Good Product

    Good product just as soon as I added to my 16,000 lb. inground pool I noticed the results on the next day.

    Helpful?5U80U97265C2430512209
    Oct 9, 2026
    Reviewer name: Amy
    Item details
    Size: 4 x 2 lb.
    Sold and shipped byDohenys PoolSuppliesSuperstore
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Yellow Algae in Pools

    Worked perfectly to clear up yellow algae.

    Helpful?5U80U97265C2430512209
    Aug 21, 2026
    Reviewer name: ilene
    Item details
    Size: 2 x 2 lb.
    Sold and shipped byDohenys PoolSuppliesSuperstore
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Product worked perfectly and was half the price as that in local pool supply stores and other on line sites.

    Helpful?5U80U97265C2430512209
    Current price is $29.98
    Price when purchased online
    • Free shipping
    • Free Holiday returns until Jan 31

    How do you want your item?

    How do you want your item?
    Ships to
    Arrives between Nov 18 - Nov 19
    |
    Sold and shipped by Dohenys PoolSuppliesSuperstorePro Seller
    4.4573170731707314 out of 5 stars
    4.5 stars out of 5, based on 1148 seller reviews(4.5)
    Extended holiday returns
    Free Holiday returns until Jan 31