Customer Reviews

Rating: 4.4 of 5 stars 84 Reviews 84 Reviews 4.4 out of 5 Stars

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89% Recommend

89% of reviewersrecommend this product

Rating: 4.4 of 5 stars 4.4 / 5

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API Pond Algaefix Algae Control Solution

API Pond Algaefix Algae Control Solution

  • Most Helpful Positive Review

    Read All 72 Positive Reviews

    Very Effective

    By Tubwater on Jul 30, 2021

    I bought a house with a 3000 gal koi pond/fountain not long ago. The pond is equipped with 2 stages of filtration. The previous owner fought murky green water for years with limited success. The very large, brightly colored Koi were barely visible. I started looking for an algaecide and settled on I bought a house with a 3000 gal koi pond/fountain not long ago. The pond is equipped with 2 stages of filtration. The previous owner fought murky green water for years with limited success. The very large, brightly colored Koi were barely visible. I started looking for an algaecide and settled on API Algae Fix. Within a few weeks the pond was crystal clear and remains so with regular treatments. I read several comments about the danger to fish. I have several large, valuable Koi so I was very careful to follow instruction about dosing. I measured the pond carefully to get an accurate water volume including the volume in the filtration and circulating system to determine the proper dosing. My pond is also equipped with a secondary aeration system which ensures adequate O2 saturation. This product is very effective and safe for fish but the buyer should follow the directions and warnings carefully. I am very satisfied with the product. … more

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  • Most Helpful Critical Review

    Read All 12 Critical Reviews

    Nothing at All

    By Rosa on Jul 16, 2021

    It literally did nothing. I mean absolutely nothing, not even when double dosed and give more time the directions state to work. Kind of feel it made it worse.

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84 Reviews

Showing 1-10 of 84 Reviews

  • 5 out of 5 stars

    Very Effective

    By on

    I bought a house with a 3000 gal koi pond/fountain not long ago. The pond is equipped with 2 stages of filtration. The previous owner fought murky green water for years with limited success. The very large, brightly colored Koi were barely visible. I started looking for an algaecide and settled on API Algae Fix. Within a few weeks the pond was crystal clear and remains so with regular treatments. I read several comments about the danger to fish. I have several large, valuable Koi so I was very careful to follow instruction about dosing. I measured the pond carefully to get an accurate water volume including the volume in the filtration and circulating system to determine the proper dosing I bought a house with a 3000 gal koi pond/fountain not long ago. The pond is equipped with 2 stages of filtration. The previous owner fought murky green water for years with limited success. The very large, brightly colored Koi were barely visible. I started looking for an algaecide and settled on API Algae Fix. Within a few weeks the pond was crystal clear and remains so with regular treatments. I read several comments about the danger to fish. I have several large, valuable Koi so I was very careful to follow instruction about dosing. I measured the pond carefully to get an accurate water volume including the volume in the filtration and circulating system to determine the proper dosing. My pond is also equipped with a secondary aeration system which ensures adequate O2 saturation. This product is very effective and safe for fish but the buyer should follow the directions and warnings carefully. I am very satisfied with the product. … more

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  • 5 out of 5 stars

    Pond algae control

    By on

    I am very satisfied with this product, it really works, in about a week my pond was clear from the green algae.

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  • 1 out of 5 stars

    Nothing at All

    By on

    It literally did nothing. I mean absolutely nothing, not even when double dosed and give more time the directions state to work. Kind of feel it made it worse.

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  • 5 out of 5 stars

    Outstanding purchase

    By on

    I was amazed at the purchase I made for some very expensive pond algae preventer. Algaefix is the best product I have found to prevent algae growth in our pond. We have a 10,000 gallon pond so we go thru a lot of this stuff. When I found it online at Chewy the price was not to be believed! I saved a bundle and they shipped it in a day! I will always check Chewy's prices now before I purchase anything for my pond!!!

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  • 5 out of 5 stars

    Love this product

    By on

    We have used this for several years. It helps keep our large koi pond clear and free of algae.

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  • 5 out of 5 stars

    I order this stuff every year

    By on

    Another great product from Chewy. Super fast shipping and one of the best customer services. Been ordering for years and never had a problem.

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  • 2 out of 5 stars

    Didn’t do the job

    By on

    I’ve been applying this to my pond as directed for a few weeks now and have not noticed any difference in algae growth. The only reason I gave two stars is because it didn’t kill my koi fish.

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  • 5 out of 5 stars

    Great service

    By on

    great service,fast shipping,good products thank you

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  • 1 out of 5 stars

    Bad batch of ALGAEFIX

    By on

    Have ordered this in it ALGAEFIX for years on line. Its always clear. This batch was dark yellow with lots of sediment

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  • 5 out of 5 stars

    WONDERFUL ALGAE CONTROL

    By on

    I have been using this Algaefix product for some years now, and it really helps keep the algae in my ponds under control, and keeps it from taking over. This is a good price. I looked everywhere and could not find It less expensive anywhere. Chewy is a good place to buy.

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