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API

API POND ALGAEFIX (1 gallon) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 38400 Gallons - Safe for Fish, Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered

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Availability: In Stock.
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Arrives Tuesday, Jun 2
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Size: 1-Gallon


Style: Pond Treatment


Features

  • API POND ALGAEFIX Helps resolve algae problems and controls the formation of new algae; works fast without harm to fish, aquatic plants, surrounding wildlife, or pets when used as directed; includes one gallon for treating up to 38,400 gallons
  • Fast and Effective Controls most types of algae, including green water (Chlorella), string and hair algae (Cladophora), blanket weed algae (Oedogonium) in ponds, koi ponds, and fountains
  • Safety First EPA-registered and copper-free formula is safe for fish and plants when used as directed and won't disrupt beneficial bacteria or accumulate in pond sediment
  • How to Use Ensure that the pond/fountain has vigorous aeration; mix thoroughly into the pond/fountain and disperse evenly; repeat every 3 days until algae is controlled, then dose weekly to keep ponds/fountains clear and reduce maintenance
  • Why API Products? For over 60 years, we've been a leader in the aquatics industry, developing and perfecting products and solutions for indoor aquariums and outdoor ponds. Today, our family of products includes treatments, testing, and nutrition.

Description

With API POND products, it’s easy to keep a beautiful pond. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as koi, catfish, perch, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

Brand: API


Liquid Volume: 1 Gallons


Item Weight: 8.25 Pounds


Item Form: Liquid


Number of Packs: 1


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 6 x 6 x 12 inches; 8.25 Pounds


Item model number ‏ : ‎ 169C


Department ‏ : ‎ Home


Date First Available ‏ : ‎ June 8, 2005


Manufacturer ‏ : ‎ Mars Fishcare


Best Sellers Rank: #221 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #1 in Water Garden & Pond Treatment


#1 in Water Garden & Pond Treatment:


Customer Reviews: 4.3 4.3 out of 5 stars (21,002)


Brand Name: API


Manufacturer: Mars Fishcare


UPC: 317163031698 617163031699


Global Trade Identification Number: 98


Model Number: 169C


Manufacturer Part Number: 169C


Unit Count: 1 Fluid Ounces


Item Type Name: Pond build up & green water waste Remover


Liquid Volume: 1 Gallons


Item Weight: 8.25 Pounds


Item Form: Liquid


Pet Type: Fish


Target Species: Fish and Plants


Allergen Information: Apple Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • This product really does clear out algae fast! This product really does clear out algae fast!
Size: 8-Ounce Style: Pond Treatment
Review Image by Raisin
This stuff is amazing! I have a 40 gallon freshwater tank with lots of tropical fish in it. My tank is well established, but I've been having some issues with algae growing on the tank decorations and on the glass. I do water changes about once a week, I also have a very good quality canister filter. But managing the growth of algae was a major problem. So I bought a bottle of the Algaefix and I used exact as directed on the bottle. Within a few hours my tank was crystal clear. I couldn't believe how fast and efficiently it worked. I'm happy to report that all of my fish are doing very well. This product did not harm them at all. I definitely recommend this to anyone who's having an issue with too much algae growth, just be sure and follow the directions on the amount to use. ... show more
Reviewed in the United States on April 28, 2026 Reviewed in the United States on April 28, 2026 by Raisin
    • Algae Fix
Size: 16-Ounce Style: Pond Treatment
Excellent product, easy to use, works quite fast! Water in my little pond is clear! Highly recommend. I will be returning. Thank you.
Reviewed in the United States on May 27, 2026 by Patricia
    • Great stuff; works well with no adverse effects
Size: 1-Gallon Style: Pond Treatment
Works better than any other product I've tried to control various forms of algae in a 3000 gallon pond. Water gets and stays clearer than I've seen it previously when using other algae control products. I don't have any fish to be concerned about but it hasn't harmed any of the water lilies or other pond plants. Only downside is for me it can be a bit expensive if I use as much as the directions say every week, so I'll often stretch out the applications to a lesser frequent schedule and I've found a frequency that works well for my situation. ... show more
Reviewed in the United States on July 18, 2025 by Tom M
    • Works well- follow the directions
Size: 32-Ounce Style: Pond Treatment
I have used this in my fountains for years. Works well and is a great product when used as directed. Excellent water clarity
Reviewed in the United States on May 15, 2026 by Gary M
    • Works Great
Size: 1-Gallon Style: Pond Treatment
Works great! This has been the best solution to the algae in my pond and on the rocks in my waterfall without harming my fish! Highly satisfied!
Reviewed in the United States on April 19, 2026 by Bobak
    • does not work in cool weather
Size: 8-Ounce Style: Pond Treatment
I have used this twice now its cool weather but the algea is thriving. seems to have grown since i used the algea control.
Reviewed in the United States on January 16, 2026 by Melody M.
    • Works great.
Size: 32-Ounce Style: Pond Treatment
This really works because I pour a lot into the pond with out of control algae growth. I didn't even read the instruction, just dumped a cup or two. The algae turned brown and completely stopped. I haven't seen any more growing since about a month after using the product. Two weeks after, I added some fish in there and they are OK. ... show more
Reviewed in the United States on May 11, 2026 by Kag
    • Ineffective and detrimental
Size: 1-Gallon Style: Pond Treatment
This is without a doubt the worst pond algaecide product I’ve ever purchased. I used this the day after the water feature guys cleaned and filled the pond. Three days later I added a bit more. The next day the pond water was green - not cloudy - green. A guest said the pond looks like the Chicago River on St. Patrick’s Day. It does. The pond water looks as though it’s dyed. I called the 800 number on package and I have left two messages. No one has responded. Caveat emptor!!!!!!!!!!! I had to give a one star rating in order to post the review, this algaecide is a waste money. ... show more
Reviewed in the United States on May 5, 2026 by J. Sobel

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