Coral Seas YELLOWOUT Yellow Out Pool Algaecide 2 Lbs.
Coral Seas YELLOWOUT Yellow Out Pool Algaecide 2 Lbs.
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Coral Seas

Coral Seas YELLOWOUT Yellow Out Pool Algaecide 2 Lbs.

4.3 stars out of 72 reviews
(4.3)|
72 ratings
Coral Seas YELLOWOUT Yellow Out Pool Algaecide 2 Lbs.Coral Seas YELLOWOUT Yellow Out Pool Algaecide 2 LbsYellow Out for Swimming PoolsYellow OutYellow Out
Size:3.81" x 3.83" x 7.25"

Key item features

  • Effective Algae Cleanup: Amazing Yellow Algae Cleanup Results! Yellow Out is a chemical breakthrough that provides impressive cleanup results when used before shock treatment.
  • Versatile Compatibility: Not affected by high levels of cyanuric acid and works well with salt chlorine generators, making it suitable for various pool systems.
  • Metal-Free Formula: Contains no metals, ensuring it can be used safely with all pool surfaces without causing damage.
  • Easy Dosage: Recommended dosage is 2 lbs. per 15,000 gallons of pool water, making it simple to measure and apply.
  • Convenient Packaging: Ships in 2 lb. containers, allowing for easy handling and storage. The more you buy, the more you save!
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Current price is $19.89
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  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives by Thu, Apr 9
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Sold and shipped by Dohenys PoolSuppliesSuperstore
4.453754080522307 stars out of 5, based on 919 seller reviews(4.5)
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Customer ratings & reviews

4.3 out of 5 stars
stars72 ratings43 reviews
How item rating is calculated
  1. 5 stars72% (52)
  2. 4 stars8% (6)
  3. 3 stars8% (6)
  4. 2 stars3% (2)
  5. 1 star8% (6)

Reviews summary

Pros
  • : Simple directions make it easy.
  • : Offers similar prices to other retailers.
  • : Quickly eliminates yellow and mustard algae from pool walls and water.
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Showing 1-3 of 43 reviews

Dec 10, 2025
Colleen
Item details
Size: 3.81" x 3.83" x 7.25"
Sold and shipped byDohenys PoolSuppliesSuperstore
5 out of 5 stars review

Verified Purchase

Struggled with my pool for years. Once I determined it was mustard or yellow algae this product made all the difference. Only issue was determining and measuring the correct amount as my pool is smaller and I needed less than the container. However, I figured it out and this solved my problems. Now my pool is looking fantastic, my water stays balanced and I use far less chemicals in my pool maintenance now. Great product

Helpful?5U80U97265C2268950532
May 28, 2025
TheGman
Item details
Size: 3.81" x 3.83" x 7.25"
Sold and shipped byDohenys PoolSuppliesSuperstore
5 out of 5 stars review

Verified Purchase

Yellow Out Algaecide Eliminator

Yellow Out Pool Algaecide is the best product on the market for eliminating that yellow Algae that accumulates in pools, it's easy to use, fast acting, price is very fair and great shipping time. It's easy to place an order using Walmart .com shopping on line.

Incentivized Review
Helpful?5U80U97265C2268950532
Nov 1, 2025
nicole
Item details
Size: 2 x 2 lb.
Sold and shipped byDohenys PoolSuppliesSuperstore
5 out of 5 stars review

Verified Purchase

Works

Follow the instructions 100% and it will work. Yellow algae gone and I have a 20x40ft pool. Make sure you have the shock and chlorine ready to go.

Helpful?5U80U97265C2268950532