We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy

All Categories

Patio, Lawn & Garden

Outdoor Décor

Pond Algaecides

10 Best Pond Algaecides 2024 in the US

From leading brands and best sellers available on the web.

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

View on Amazon

Winner

API

API POND ALGAEFIX Algae Control 1-Gallon Bottle

Available in:

6 Sizes

2 Styles

10.0

score

View on Amazon

Available in:

6 Sizes

2 Styles

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

View on Amazon

CrystalClear

CrystalClear Algae D-Solv Pond Algae Control, Fast-Acting EPA Registered Algaecide, Use in Fountains & Outdoor Ponds Containing Koi & Other Fish, Treats 46,080 Gallons, 1 Gallon

Available in:

2 Flavors

6 Sizes

8.8

score

View on Amazon

Available in:

2 Flavors

6 Sizes

Airmax

Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon

Available in:

2 Sizes

8.5

score

View on Amazon

Available in:

2 Sizes

API

29%OFF

API ALGAEFIX Algae Control 16-Ounce Bottle

Available in:

4 Sizes

8.5

score

View on Amazon

Available in:

4 Sizes

Crystal Blue

Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds

8.2

score

View on Amazon

Sanco Industries

Fountain Algaecide and Clarifier - 8oz - Kills and Inhibits All Types of Algae Growth, Formulated for Small Ponds and Water Features, Treats up to 8,000 Gallons

8.2

score

View on Amazon

What we like 🙂

1.
Effective Algae Control: Eliminates green water, string, and blanketweed algae.
2.
Non-Hazardous Formula: Safe for pond plants, wildlife, and pets when used as directed.
3.
Non-Staining and Non-Foaming: Maintains water clarity without staining or foaming.
4.
Multiple Bottle Sizes: Available in 8 oz., 32 oz., and 64 oz. bottles.
5.
Regular Maintenance Dosing: Dose every 5 days to maintain algae control.

Airmax

Airmax Knockdown Defense 2-in-1 Liquid Pond Algae Control, Effective & Fast Acting Algaecide, Aquatic Weed Treatment for Clear Water in Ponds & Lakes, Liquid Formulation for Easy Use, 16 fl oz

Available in:

5 Sizes

2 Colors

8.2

score

View on Amazon

Available in:

5 Sizes

2 Colors

Crystal Blue

20%OFF

Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre

7.9

score

View on Amazon

Aquascape

10%OFF

Aquascape Clean Pond Water Treatment for Dosing System SL, 96092

Available in:

3 Styles

7.6

score

View on Amazon

Available in:

3 Styles

#10

Aquascape

13%OFF

Aquascape MAINTAIN Water Treatment for Koi and Fish Ponds, Easy To Use, Powerful Blend of Beneficial Bacteria, Phosphate Binder, Flocculent, and Detoxifier, 32 ounce / 946 ml | 96059

7.0

score

View on Amazon

More products we considered

EasyCare 2 Pack 8 Oz ProTec Scale and Stain Remover - Prevents White Calcium Scale and Metal Stain Buildup

View Deal

CareFree Enzymes 95562 Fountain Protector Pond Water Clarity

View Deal

Chlorine/Chloramine Destroyer by Care Free Enzymes CFE94102 -16 oz - treats 4000 Gal

View Deal

10 Best Pond Algaecides 2024 in the US

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

API POND ALGAEFIX Algae Control 1-Gallon Bottle

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

CrystalClear Algae D-Solv Pond Algae Control, Fast-Acting EPA Registered Algaecide, Use in Fountains & Outdoor Ponds Containing Koi & Other Fish, Treats 46,080 Gallons, 1 Gallon

Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon

API ALGAEFIX Algae Control 16-Ounce Bottle

Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds

Fountain Algaecide and Clarifier - 8oz - Kills and Inhibits All Types of Algae Growth, Formulated for Small Ponds and Water Features, Treats up to 8,000 Gallons

Airmax Knockdown Defense 2-in-1 Liquid Pond Algae Control, Effective & Fast Acting Algaecide, Aquatic Weed Treatment for Clear Water in Ponds & Lakes, Liquid Formulation for Easy Use, 16 fl oz

Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre

Aquascape Clean Pond Water Treatment for Dosing System SL, 96092

Aquascape MAINTAIN Water Treatment for Koi and Fish Ponds, Easy To Use, Powerful Blend of Beneficial Bacteria, Phosphate Binder, Flocculent, and Detoxifier, 32 ounce / 946 ml | 96059

EasyCare 2 Pack 8 Oz ProTec Scale and Stain Remover - Prevents White Calcium Scale and Metal Stain Buildup

CareFree Enzymes 95562 Fountain Protector Pond Water Clarity

Chlorine/Chloramine Destroyer by Care Free Enzymes CFE94102 -16 oz - treats 4000 Gal

FAQ

Are pond-algaecides safe for fish and plants?

What is the best algaecide for my pond?

How often should I use an algaecide in my pond?

Can pond algaecides harm wildlife or pets?

Are there natural alternatives to chemical algaecides?

10 Best Pond Algaecides 2024 in the US

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

API POND ALGAEFIX Algae Control 1-Gallon Bottle

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

CrystalClear Algae D-Solv Pond Algae Control, Fast-Acting EPA Registered Algaecide, Use in Fountains & Outdoor Ponds Containing Koi & Other Fish, Treats 46,080 Gallons, 1 Gallon

Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon

API ALGAEFIX Algae Control 16-Ounce Bottle

Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds

Pond Clarifier - Fish-Friendly Koi Pond Water Clarifier to Quickly Clear Murky Pond Water and Remove Pond Sludge with Natural Enzymes - Fish Pond Water Treatment - AquaDoc Pond Supplies

Blue Pond Dye - Get Beautiful, Fish-Friendly Pond Water - AquaDoc Pond Supplies

Fish Pond Water Conditioner - Convert tap Water to Fish-Friendly Pond Water - AquaDoc Pond Supplies

Pond Barley Extract - Get Crystal Clear, Fish-Friendly Water with Pond Barley Straw Extract - AquaDoc Pond Supplies

Carefree Pond and Fountain Protector, 16 oz. Each, 6 Pack

Fountain Algaecide and Clarifier - 8oz - Kills and Inhibits All Types of Algae Growth, Formulated for Small Ponds and Water Features, Treats up to 8,000 Gallons

Airmax Knockdown Defense 2-in-1 Liquid Pond Algae Control, Effective & Fast Acting Algaecide, Aquatic Weed Treatment for Clear Water in Ponds & Lakes, Liquid Formulation for Easy Use, 16 fl oz

Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre

Aquascape Clean Pond Water Treatment for Dosing System SL, 96092

Aquascape MAINTAIN Water Treatment for Koi and Fish Ponds, Easy To Use, Powerful Blend of Beneficial Bacteria, Phosphate Binder, Flocculent, and Detoxifier, 32 ounce / 946 ml | 96059

Silver Algaecides

Algaecides

Natural Algaecides

Copper Algaecides

EasyCare 2 Pack 8 Oz ProTec Scale and Stain Remover - Prevents White Calcium Scale and Metal Stain Buildup

CareFree Enzymes 95562 Fountain Protector Pond Water Clarity

Chlorine/Chloramine Destroyer by Care Free Enzymes CFE94102 -16 oz - treats 4000 Gal

FAQ

Are pond-algaecides safe for fish and plants?

What is the best algaecide for my pond?

How often should I use an algaecide in my pond?

Can pond algaecides harm wildlife or pets?

Are there natural alternatives to chemical algaecides?