Yellow Out
Coral Seas

Yellow Out

Yellow OutYellow OutYellow Out for Swimming PoolsCoral Seas YELLOWOUT Yellow Out Pool Algaecide 2 LbsYellow Out
Size:2 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.
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Current price is $33.98
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Arrives by Mon, Jun 29
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Sold and shipped by Dohenys PoolSuppliesSuperstorePro Seller
4.4496439471007125 stars out of 5, based on 983 seller reviews(4.4)
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Customer ratings & reviews

4.3 out of 5 stars
stars84 ratings46 reviews
How item rating is calculated
5.0
4.0
3.8
  1. 5 stars71% (60)
  2. 4 stars7% (6)
  3. 3 stars8% (7)
  4. 2 stars4% (3)
  5. 1 star10% (8)

Reviews summary

Pros

  • : Simple directions make it easy.
  • : Quickly eliminates yellow and mustard algae from pool walls and water.
  • : Offers similar prices to other retailers.
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Showing 1-3 of 46 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?5U80U97265C2430512209
May 31, 2026
TERRI
Top Reviewer
Item details
Size: 3.81" x 3.83" x 7.25"
Sold and shipped byDohenys PoolSuppliesSuperstore
5 out of 5 stars review

Verified Purchase

Algae Cleaner

This product works well in an algae pool but make sure you look at the amount prior to buying it. Measure your pool up against the amount you will need. Size makes a difference.

Helpful?5U80U97265C2430512209
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?5U80U97265C2430512209