Yellow Out
Yellow Out
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Coral Seas

Yellow Out

108 ratings
Yellow OutYellow OutYellow Out for Swimming PoolsCoral Seas YELLOWOUT Yellow Out Pool Algaecide 2 LbsYellow Out
Size20 lbs

Key item features

  • 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.
  • Ships in 2 lb. containers – the more you buy, the more you save!

Specs

Chemical standard type, AlgicideBrand, Coral SeasPool chemical type, Pool Algae Chemical ControllersForm, PowderRec. use, Swimming PoolSize, 20 lbs

About this item

Product details

Yellow Out - 20 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.
  • Ships in 2 lb. containers – the more you buy, the more you save!
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

Brand

Coral Seas

Pool chemical type

Pool Algae Chemical Controllers

Form

Powder

Warranty

Warranty information

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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
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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?5U80U97265C2416044492
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?5U80U97265C2416044492
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?5U80U97265C2416044492
Current price is $149.99
Price when purchased online
  • Free shipping
  • Free Holiday returns until Jan 31

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Arrives between Nov 18 - Nov 19
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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