Liquid Algae Control Liquid Algae Control Effectively eliminate many types of green water algae, and string algae in self-contained ponds with liquid algaecides. Aeration must be continuous to prevent fish loss.
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Liquid Algae Control

Microbe-Lift Algaway 5.4 Algaecide

Compare to AlgaeFix, same active ingredient and 20% more concentrated.

Algaecide For Ponds - Stops Algae Growth & Controls string algae!

No more green water with ALGAWAY 5.4 Algaecide!

It stops algae growth in ponds and can be applied to areas that contain fish and plants!

For use in self-contained ornamental ponds and fountains without any outflow. For small ponds with heavy algae growth, clean the excess algae off the sides and ornaments before adding ALGAWAY 5.4 . This will reduce the amount of decaying organic matter.

Fountains, Small Ponds with goldfish and koi - Treat only those fountains and ponds which will have no outflow after treatment. High water temperatures cause more rapid natural decay of dead algae which can cause fish distress. If animals are present clean out excess algae as stated above or use before temperature exceeds 75°F (24°C).

CAUTIONS: In ponds, insure that water is well aerated via waterfall, fountain or other method to prevent fish loss. Aeration must be continuous. Not safe for use with snails, shrimp and other crustaceans or mollusks.

Repeat dosage once per week.

Microbe-Lift Algaway Application Rates
Volume of water to treat (gallons) Dosage
360 gallons1 oz

Microbe-Lift Algaway 5.4 Algaecide

Item Size Treats (up to)
8 oz
2,839 gallons
16 oz
5,678 gallons
32 oz
11,356 gallons
1 gallon
45,424 gallons
2.5 gallons
113,560 gallons
Aquascape Algaecide

Aquascape Algaecide is a liquid pond algae control product that quickly and efficiently combats algae and stops algae growth in ponds, waterfalls, and fountains. Algaecide keeps water clear and greatly reduces pond and fountain maintenance. Aquascape Algaecide controls string algae growth as well as single-celled floating algae, also known as green water. Elimination of algae will allow you to spend more time enjoying your pond and less time maintaining it. A teaspoon will treat 50 gallons, making the addition of treatment quick, easy, and precise. 

  • Stops algae growth
  • Eliminates green water
  • Fast Acting and Easy to use
  • Can be used in ponds and fountains with fish and plants
Volume of Water
to Treat (Gallons)
Unit of Measure
10
1 ml 1/5 tsp
50 5 ml 1 tsp
100 10 ml 2 tsp
300 30 ml 2 tbsp

Aquascape Algaecide

Item Size Treats (up to)
8 oz
2,500 gallons
16 oz
5,000 gallons
32 oz
10,000 gallons
1 gallon
40,000 gallons
2.5 gallon
100,000 gallons
API Pond AlgaeFix

Effectively controls many types of green or green water algae, string or hair algae and blanket weed in ponds that contain live plants. Controls existing algae and helps resolve additional algae blooms. Keeps ornamental ponds and water gardens clean & clear. Can be used in ponds with plants!

This product works very well and doesn't harm your aquatic plants or fish when used according to label instructions.

API Pond AlgaeFix Application Rates
Add one dose every three days until algae is under control (usually 3-4 doses) and then once per week to prevent the return of algae.
Add 1 tsp per 50 gallons Add 1/4 cup per 600 gallons
Add in an area of high water circulation & aeration
AlgaeFix can be mixed in a bucket of pond water & dispersed around pond

API Pond AlgaeFix

Item Size Treats (up to)
8 oz
2,400 gallons
16 oz
4,800 gallons
32 oz
9,600 gallons
64 oz
19,200 gallons
1 gallon
38,400 gallons
2.5 gallons
96,000 gallons
Biosafe GreenCleanFX

Fast acting algae control. GreenCleanFX Liquid Algaecide is a highly effective and affordable solution to algae problems that plague a wide variety of backyard water features, including ornamental ponds, pondless waterfalls, and fountains. As an EPA-registered algaecide, it is compliant with the USDA National Organic Program regulations, making it safe for use in water features containing fish, plants, and other aquatic life.

  • Breaks down into water and oxygen, leaving no residuals
  • Prevention and control of string algae and single-cell algae (Pea Soup)
  • Reduces organic build-up and odors 
  • Fish, pet and family friendly when used as directed
Treatment Per
50 gal.
Per
500 gal.
Curative 2 tsp.
3.4 ounces
  1. Apply early in the morning under sunny, calm conditions.
  2. Measure the pH of water before treatment. If pH is below 7.0, adjust the water pH to between 7.0 and 8.0.
  3. Distribute recommended dose as evenly as possible to several areas around the pond so product evenly disperses. It may also be mixed in a bucket of pond water and evenly distributed around the pond.
  4. Do not shut off pump(s) or aeration device(s); aeration must be continuous during treatment for 48 hours.
  5. Repeat dose every 3 days until algae is under control.

Removing excessive algae growth will reduce the amount of decaying organic matter in the pond.

Biosafe GreenCleanFX

Item Size
16 oz
33 oz
1 gallon
Tetra Algae Control

Quickly remove green algae in pond water with Tetra Algae Control. Effective at combating algae blooms (green water), string & hair algae (Spirogyra) and blanket weed (Oedogonium). Safe for ornamental plants and fish, when used as directed.

Tetra Algae Control Application Rates
10mL 1/4 cup
for every 120 gallons of pond water for every 720 gallons of pond water
Dilute the proper dosage in a bucket of water and pour into the treatment area. Treatment may be repeated if needed every three days up to three total doses.
Do not use in ponds established less than 3 months

Tetra Algae Control

Item Size Treats (up to)
8.4 oz
3,000 gallons
16.9 oz
6,000 gallons
33.8 oz
12,000 gallons
101.4 oz
36,000 gallons
OASE AquaActiv Algaecide

One of the biggest dilemmas for a pond owner during the summer is algae blooms. Exposure to warmer air temperatures, sunlight and rainfall, can result in excessive algae blooms. Oase AquaActiv Algaecide effectively controls many types of green or green water algae, string or hair algae and blanket weed in ponds that contain live plants. Controls existing algae and helps resolve additional algae blooms. Keeps ornamental ponds and water gardens clean & clear. Can be used in ponds with fish and plants.

Directions For Use: Add 1 teaspoon for every 50 gallons of water. Thoroughly mix Algaecide into pond/fountain by adding near the pump outflow, waterfall, or aeration device. Algaecide can be mixed in a bucket of pond/fountain water. Repeat dose every three days until algae is controlled. Be prepared to siphon out dead filamentous algae. Once algae growth is under control, add one dose every 5 days. Weekly doses of Algaecide will control growth and reduce pond/fountain maintenance.

OASE AquaActiv Algaecide

Item Size Treats Up To
18 oz
5,320 gal.
Microbe-Lift AlgAway 60

Chemical Algae Eliminator Formulated for Decorative Ponds & Fountains, Irrigation Ponds, Water Hazards & Retention Ponds

  • Eliminates most planktonic and filamentous algae quickly and efficiently and there's no phytotoxicity so water is safe for irrigation, turf and shrubs
  • Highly concentrated (60% active ingredient) E.P.A. registered algaecide
  • Keeps pond water clean and algae free
  • Eliminates plugging of irrigation lines and pumps

Registered for sale in 49 states and the District of Columbia

Not for sale, use or distribution in New York State

E.P.A. Registration Number 1448-114-74466

***This Product will no longer be allowed for sale in California as of 1/1/2016***

Microbe-Lift AlgAway 60

Item Size
32 oz
1 Gal
API Pond Microbial Algae Clean

Alternative Approach to Harsh Chemicals

Microbial Algae Clean is an alternative, all-natural approach to algae control as the first bacterial algaecide registered with the Environmental Protection Agency. This product contains patented bacteria to control green water algae in ponds with live fish and plants, and helps establish and maintain a clean, odor-free and algae-free pond. Microbial Algae Clean promotes a cleaner pond environment by eliminating organic sludge and debris, and will not harm live plants or fish.

  • Contains patented bacteria
  • Biological inhibitor of green water
  • Eliminates troublesome organic sludge and debris
  • Helps establish and maintain the biological filter
  • Reduces noxious odors from the pond
API Pond Microbial Algae Clean Application Rates
Add one dose twice a week for the first two weeks, then once a week to maintain control of green water algae.
Add 1 tsp per 50 gallons Add 1/4 cup per 600 gallons
Do not apply directly to water other than that in your synthetically lined ornamental pond.

API Pond Microbial Algae Clean

Item Size Treats (up to)
16 oz
4,800 gallons
32 oz
9,600 gallons
64 oz
19,200 gallons
1 gallon
38,400 gallons
Nualgi Ponds

An innovative approach to improving pond balance, Nualgi Ponds™ is built on a nano silica base with our patented formula of 12 essential elements that safely help restore the natural balance, improve water quality and control nuisance algae.

Engineered specifically to benefit the health of your aquatic plants and fish, Nualgi Ponds™ is easy to use, efficient, and yields rapid results.

Safe for Fish, Plants, Amphibians, Birds & Pets!

    When you supplement your regular maintenance with Nualgi Ponds, you will be able to:

  • WATCH YOUR POND FLOURISH - Nualgi Ponds will significantly improve water quality as well as the health of fish and plants. For many eutrophic ponds, results may be visible by afternoon on the first dose - starting with the bubbling up of oxygen, elimination of odor, and Blue Green Algae crashing and floating to the surface.
  • SEE MORE - By reducing nuisance algae growth, Nualgi Ponds improves water clarity and visibility to reveal more of the pond’s environment and its inhabitants.
  • FEED LESS - By restoring missing nutrients, Nualgi Ponds brings balance to the natural marine food chain from the bottom up by promoting the growth of diatoms and zooplakton – free food for your fish and shrimp!
  • Combats Nuisance Algae
  • Safe Without Constant Aeration
  • Safe for Fish, Shrimp, and Crustaceans
  • Safe for Healthy Bacteria & Enzymes
  • Classified as Nontoxic
  • Improves Biological Filtration
  • Increases Nutrient Bioavailability
  • Delivers Live Food for Fish
  • Provides Nutrients for Aquatic Plants
Use 1 ml diluted in 100 ml water per 1,000 gallons - dose every 7 days.
  • 40°-49° – Dose once a month
  • 50°-59° – Dose once every two weeks
  • 60°+ – Dose once a week with normal instructions

Nualgi Ponds

Item Size Treats
2.02 oz
60,000 Gal
4.22 oz
125,000 Gal
8.45 oz
250,000 Gal
16.9 oz
500,000 Gal
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