how often can i use this product? it works wonders...

I use the product every three days until the algae blooms are under control, and then I use it once a week thereafter. In hot weather, I have to go back to the first plan -- every three days. That type of use has not harmed the snails, fish, turtle, or frogs in the pond, but it does zap the algae quite well. I hope this helps. Oh, I put it in the pond in the early mornings, not when the sun is roasting. We are reaching 107 degrees here right now. I also insert the product where the stream flows into the pond so that the mix is dispersed quickly. I mix it in a small bucket of water before pouring it in the pond.

Is it safe for water fowl, ex. duck, egrets?

It is toxic if not diluted; use as directed and mix in water in a container before adding to pond then is safe for anything!

What will work in a water feature with two pumps, flow and two waterfalls. About 1000 gallons. Algae grows on the rocks.

The best thing I have used is algaefix. Follow the directions on the bottle. I use it about once every week to keep my 3000 gallon clean.....

is this safe for birds?

I use this product 1x/week in summer. The fish need an extra oxygen source while this kills algae, for first 24 hrs after adding to water I make a point of keep filter on AND running fountain for O2 source. The fish all move to directly under the return line within an hour after treatment. Safe to koi, goldfish, pond turtles, the lizards and a crow.. have all survived a dip in treated water. Also, savvy pond shop guy told that once algae is under control, cut back on dosage and see how much you can decrease recommended treatment amount while still algae free, we can go from 1.75 cup to 1.15m so maintainence is @ 30% less.

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API POND ALGAEFIX (32 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 9600 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered

API POND ALGAEFIX (32 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 9600 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered

Product ID: 775725766

Details

Brand
API
Item Form
Liquid
Item Weight
32 Ounces
Liquid Volume
32 Fluid
Manufacturer
Mars Fishcare

⚡Fast-acting algae control in 3 days

💧Treats up to 9,600 gallons

🛡️EPA-registered, copper-free & safe

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$73.19

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Details

Brand
API
Item Form
Liquid
Item Weight
32 Ounces

Description

💦 Your pond’s secret weapon for algae-free zen vibes

ECO SAFE FORMULA - EPA-registered and copper-free, protecting fish, plants, and beneficial bacteria without harmful buildup.
EFFORTLESS MAINTENANCE - Simple dosing every 3 days until control, then weekly to keep your pond pristine and maintenance low.
CRYSTAL CLEAR CONFIDENCE - Clears green water, string, hair & blanket weed algae fast—see results in just 3 days.
TRUSTED AQUATIC EXPERTISE - Backed by 60 years of API innovation, ensuring premium quality and reliable pond care.
MASSIVE COVERAGE MINIMAL EFFORT - One 32 oz bottle treats up to 9,600 gallons, perfect for large ponds and koi habitats.

API POND ALGAEFIX is a powerful, fast-acting algae treatment designed to clear and control various algae types in ponds and fountains. Its EPA-registered, copper-free formula is safe for fish, aquatic plants, and wildlife, treating up to 9,600 gallons per 32 oz bottle. Trusted for over 60 years, it offers an easy dosing schedule that keeps your water crystal clear and your aquatic ecosystem balanced.

Specifications

ASIN	B000HCKVGE
Allergen Information	Apple Free
Best Sellers Rank	#211 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 20,284 Reviews
Global Trade Identification Number	00317163071694
Item Form	Liquid
Item Type Name	Pond Algae Remover
Item Weight	32 Ounces
Liquid Volume	32 Fluid Ounces
Manufacturer	Mars Fishcare
Manufacturer Part Number	169G
Model Number	169G
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	317163071694
Unit Count	32 Fluid Ounces

Reviews

R**N

28.04.2026

B**K

19.04.2026

T**M

18.07.2025

K**N

8.04.2026

R**R

27.06.2016

K**E

8.06.2015

G**L

23.04.2026

S**Y

15.04.2020

R**A

8.03.2018

V**D

18.02.2024

M**X

19.12.2025

P**N

7.08.2022

M**E

22.04.2025

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