---
product_id: 78892158
title: "API POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered"
brand: "api"
price: "€ 27.80"
currency: EUR
in_stock: true
reviews_count: 13
category: "Api"
url: https://www.desertcart.ie/products/78892158-api-pond-algaefix-16-fl-oz-pond-algae-control-copper
store_origin: IE
region: Ireland
---

# Visible results in 3 days Safe for fresh & saltwater 16 oz algae control solution API POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered

**Brand:** api
**Price:** € 27.80
**Availability:** ✅ In Stock

## Summary

> 💧 Clear water, clear mind — your pond’s new best friend.

## Quick Answers

- **What is this?** API POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered by api
- **How much does it cost?** € 27.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/78892158-api-pond-algaefix-16-fl-oz-pond-algae-control-copper)

## Best For

- api enthusiasts

## Why This Product

- Trusted api brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Application:** No-fuss dosing means more time enjoying your pond, less time maintaining it.
- • **Trusted Industry Leader:** Ranked #1 in Water Garden & Pond Treatment with over 20,000 positive reviews.
- • **Crystal Clear Confidence:** Transforms murky ponds into pristine aquatic havens in just days.
- • **Eco-Friendly Performance:** Dedicated to a cleaner environment while delivering top-tier algae control.
- • **Universal Aquatic Safety:** Formulated to protect all life stages—from bettas to mollusks—without harsh chemicals.

## Overview

API POND ALGAEFIX is a 16-ounce algae control solution designed for both fresh and saltwater ponds and tanks. It delivers visible algae reduction within 3 days, is safe for all aquatic life stages, and supports a cleaner, healthier environment. Trusted by thousands, it’s the top-ranked pond treatment that combines powerful performance with eco-conscious care.

## 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.

Review: This product really does clear out algae fast! - 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.
Review: Works well- follow the directions - I have used this in my fountains for years. Works well and is a great product when used as directed. Excellent water clarity

## 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 16 fl oz for treating up to 4,800 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000SP1WMC |
| Allergen Information | Apple Free |
| Best Sellers Rank | #240 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Water Garden & Pond Treatment |
| Brand | API |
| Brand Name | API |
| Customer Reviews | 4.3 out of 5 stars 20,298 Reviews |
| Global Trade Identification Number | 00317163021699 |
| Item Form | Liquid |
| Item Type Name | Pond Algae Remover |
| Item Weight | 0.3 Pounds |
| Liquid Volume | 16 Fluid Ounces |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 169B |
| Model Number | 169B |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 317163021699 |
| Unit Count | 16 Fluid Ounces |

## Product Details

- **Brand:** API
- **Item Form:** Liquid
- **Item Weight:** 0.3 Pounds
- **Liquid Volume:** 16 Fluid Ounces
- **Manufacturer:** Mars Fishcare

## Images

![API POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered - Image 1](https://m.media-amazon.com/images/I/51ht4Dt4R4L.jpg)
![API POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered - Image 2](https://m.media-amazon.com/images/I/51UgpqzS9nL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Does rain affect the efficiency?**
A: No, not really. I just clean out my bird bath at least every other week and add fresh algae cleaner

**Q: Why is my aquarium still green??**
A: Because this stuff doesn’t work

**Q: Can i use algaefix and simply clear together in the same dosing of my fountain?**
A: Yes, you can use any of the API products in conjunction to each other.

**Q: How long after treatment can pond water be used to water plants in garden?**
A: The product lasts 48hrs within the water column. Please contact API if you have any additional questions.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This product really does clear out algae fast!
*by R***N on April 28, 2026*

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.

### ⭐⭐⭐⭐⭐ Works well- follow the directions
*by G***M on May 15, 2026*

I have used this in my fountains for years. Works well and is a great product when used as directed. Excellent water clarity

### ⭐⭐⭐⭐ Works Well with Consistent Use
*by T***T on May 27, 2025*

I use this in my 75-gallon front yard pond, which has 4 feeder goldfish and solid filtration. At first, I wasn’t sure it would make much of a difference—but after several applications, the water suddenly turned crystal clear. That said, it doesn’t stay that way long. We usually need to reapply once a week, and sometimes even hit it 2–3 days in a row when it clouds up again. In my experience, the dosage instructions are too conservative. The recommended amount didn’t do much, so I doubled the dose (safely) and that’s when I saw results. It’s a bit of a process, but if you stay on top of it, it really works. I’d give it five stars if it lasted longer between applications or worked faster, but overall it’s a solid algae control solution.

## Frequently Bought Together

- API POND ALGAEFIX Algae Control 16-Ounce Bottle (169B)
- API POND ACCU-CLEAR Pond Water Clarifier 16-Ounce Bottle
- API POND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1-Pound Container

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-05-21*