Natural Chemistry Yellow Out Swimming Pool Stain Remover, 4 lbs
Natural Chemistry Yellow Out Swimming Pool Stain Remover, 4 lbs
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Coral Seas

Natural Chemistry Yellow Out Swimming Pool Stain Remover, 4 lbs

Natural Chemistry Yellow Out Swimming Pool Stain Remover, 4 lbsNatural Chemistry Yellow Out Swimming Pool Stain Remover 4 lbsCoral Seas Yellow Out 20 lbs 17616CORBio Lab 17612COR 2 lbs Yellow Out Algea Remover Algaecide
Size:4 lbs

Key item features

  • Effective Algae Removal: Used in conjunction with pool shock to safely remove green, yellow, brown, and pink algae from your pool
  • Easy Application: Simple to use, requires no brushing, and cleans up algae gently without the use of harsh chemicals
  • Safe for All Surfaces: Safe, non-toxic, and can be used on all pool surfaces, including vinyl liners
  • Chlorine Compatible: Compatible with pools operating a chlorine generator
  • Specific Dosage: Dosage: 2 lbs per 15,000 gallons
  • Pre-Shock Treatment: Use 2 lbs of Yellow Out per 15,000 gallons of water prior to shock treatment with an EPA-registered chlorine that kills yellow algae
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Current price is $29.99$7.50/lb
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Arrives by Tue, Jun 23
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Sold and shipped by In The SwimPro Seller
4.37684342641983 stars out of 5, based on 3187 seller reviews(4.4)
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Starting from $44.07

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Customer ratings & reviews

4.4 out of 5 stars
stars81 ratings48 reviews
How item rating is calculated
  1. 5 stars75% (61)
  2. 4 stars14% (11)
  3. 3 stars0% (0)
  4. 2 stars1% (1)
  5. 1 star10% (8)

Reviews summary

Pros

  • : Offers affordable options compared to similar products.
  • : Removes yellow and mustard algae from pool water.
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Showing 1-3 of 48 reviews

Aug 4, 2025
ShoppingWife
Item details
Size: 4 lbs
Sold and shipped byIn The Swim
5 out of 5 stars review

Verified Purchase

The best at killing mustard algae

Yellow out is a must have during the summer to keep our pool clean and blue. In the past, we struggled with algae that you couldn't vacuum up in the pool. As soon as you neared the algae with a pool vacuum it would spread in the water like powder. Yellow out has been a miracle. We were able to get rid of our mustard algae. We keep a container of this on hand. This is a pool staple.

Helpful?5FXZN05DI77B386375520
Nov 18, 2024
Denise
Item details
Size: 4 lbs
Sold and shipped byIn The Swim
5 out of 5 stars review

Verified Purchase

Did a great job clearing my pool.

I was very happy with this product as I needed to clear up my pool and it did the job well. The price was acceptable and product had directions that were helpful. It was shipped and received in a fairly short time. I'll purchase it again, If necessary. Will recommend it to others

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Helpful?5FXZN05DI77B386375520
Aug 4, 2025
Cynthia
Item details
Size: 4 lbs
Sold and shipped byIn The Swim
5 out of 5 stars review

Verified Purchase

Follow the instructions %26 it worked like a charm pool hasn't had any yellow algae since I've used this.

Helpful?5FXZN05DI77B386375520