API Pond Algaefix Algae Control Solution

Rated 4.3889 out of 5 stars
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API Pond Algaefix Algae Control Solution, 1-gal bottle slide 1 of 7
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$63.99Chewy Price
$89.59Chewy Price
$60.79Autoship Price
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About This Item

  • Effectively controls green water algae, string or hair algae and blanketweed in ornamental ponds.
  • Helps keep ponds, water gardens and ponds clean and clear.
  • Algaecide controls existing algae and helps resolve additional algae blooms.
  • This algae solution is safe for live plants and pond fish.
  • Do not use with freshwater crustaceans, including shrimp, crabs and lobsters.
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Special Note

1-gallon bottle treats up to 38400 gallons.

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Fish TypeKoi & Pond FishKoi & Pond FishKoi & Pond FishKoi & Pond FishKoi & Pond Fish
Aquarium TypePondPondPondPondPond

Questions & Answers

17 Customer Questions

Will this hurt my out side dogs they drink out of my pond
Answer by ChewyJul 03, 2019
It is safe for any wildlife or domestic animals to take a drink or swim in treated water as long as the dosage is correct for the volume of water being treated.

Can this be used in concrete fountains - uncoated and coated?
Answer by ChewyJul 06, 2017
API PondCare Algaefix Algicide is for synthetically lined pond and fountain use only.

How much Algaefix Algicide is needed per gallon. Our pond is approximately 1,000 gallons. This will help determine how much we need to order. Ty
Answer by ChewyDec 21, 2017
To ensure accurate dosing, determine pond volume before use. Add 1 teaspoon for each 50 US gallons of pond/fountain water or 1/4 cup for each 600 gallons of pond or fountain water. Thoroughly mix into pond water by adding near the pump outflow, waterfall, or aeration device. It can be mixed in a bucket of pond/fountain water and dispersed evenly around the pond. Repeat dose every 3 days until algae is controlled. Be prepared to siphon out dead filamentous algae. Once algae growth is under control, add one dose per week. Weekly treatments will control algal growth and reduce pond maintenance.

Hello! Should AlgaeFix and the sludge remover (EcoFix, I believe) be used at the same time, or should the sludge remover be added after all the Algaefix treatments are completed? Thank you!
Answer by ChewyApr 20, 2018
It is best to use this supplement on it's own until the algae is controlled.

ReviewsWrite a Review

Rated 4.3889 out of 5 stars
90 Reviews
Would recommend to a friend

90 Customer Reviews

Rated 5 out of 5 stars
By Rickster on Apr 1, 2022

Pond maintenance

Good products, good price, fast delivery , local supplier, support pa business

Rated 5 out of 5 stars
By Joey on Apr 6, 2022

Works as Informed

Followed instructions to the t and product worked in 2 days.

Rated 5 out of 5 stars
By Tubwater on Jul 30, 2021

Very Effective

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.

Rated 1 out of 5 stars
By Linda on Aug 22, 2021

Horrible packaging

Ordered this along with 5 litter pan deodorizer sprays. They packed them all together and I’m assuming because the algaecide was a gallon and the cat spray was small it caused the algaecide to leak along with the cat sprays. What a mess. I called and questioned why they would pack them together and she said she would ship out a replacement but packed in separate boxes. NOT. They all came together again and this one leaked. Ridiculous

Rated 5 out of 5 stars
By cdavis5534 on Jul 11, 2021

Outstanding purchase

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!!!

Rated 5 out of 5 stars
By Ellen on Sep 1, 2021

Algaefix works!

We have a new small pond and waterfall. It developed a bit of algae since we don't have any fish in it. The Algaefix worked after 2 doses. Very happy with the product.

Rated 4 out of 5 stars
By Anna on Aug 6, 2021

Algae mostly gone

After more than a week of treatment every third day the stringy algae almost Gone. There is still a little on bottom so another treatment last night. Tough algae to get rid of.

Rated 5 out of 5 stars
By Algeafix on Aug 28, 2021

works great

I have tried a couple other treatments for my fish pond and without good results. This stuff works great. Love it

Rated 1 out of 5 stars
By Rosa on Jul 16, 2021

Nothing at All

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.

Rated 2 out of 5 stars
By Katiej on Jun 11, 2021

Didn’t do the job

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.