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Best algae control for ponds - Holiday Sale 2025

Last Updated - December 14, 2025

1
Best Choice
35% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

APPLIED BIOCHEMISTS
35% Off

Cutrine-Plus Granular Algaecide 30 lbs EPA-Approved Copper-Based Treatment for Chara, Filamentous, and Planktonic Algae, Fast-Professional Level Algae Control

APPLIED BIOCHEMISTS

$100.00

$154.76
(35% Off)

More Details
Main highlights
- Simple Granular application, just throw it onto the algae growth. Great for both large-scale and spot treatments
- No restrictions on fishing, drinking, swimming, or irrigation. Safe for wildlife and livestock. Avoid use in waterbodies with copper-sensitive fish like carp, koi, or trout -EPA approved
- Fast-Acting Algae Solution Used by Experts: Can see reduction in algae growth within 1-2 days
- Due to compliance with state regulations, shipments to AK, CT, HI, ME, NJ, NY, VT, WA, and Canada are not permitted. Orders from these states will be cancelled
- Best solution for Chara and can combat a wide range of algae, such as Cyanobacteria, Green Algae, Blue Algae, Diatoms, Filamentous Green Algae, and Nitella
$100.00
$154.76 (35% Off)
2
33% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

APPLIED BIOCHEMISTS
33% Off

Cutrine-Plus Liquid Algaecide - 1 Gallon EPA-Approved Copper Formula for Fast Control of Planktonic, Filamentous and Chara Algae - Professional-Grade for Ponds, Lakes, Hatcheries & Irrigation Systems

APPLIED BIOCHEMISTS

$49.31

$73.79
(33% Off)

More Details
Main highlights
- Simple Spray Application just use on targeted areas using a sprayer. Great for both large-scale and spot treatments
- No restrictions on fishing, drinking, swimming, or irrigation. Safe for wildlife and livestock. Avoid use in waterbodies with copper-sensitive fish, like koi or trout -EPA approved
- Fast-Acting Algae Solution Used by Experts: Can see reduction in algae growth within 1-2 days
- Due to compliance with state regulations, shipments to AK, CT, HI, ME, NJ, NY, VT, WA, and Canada are not permitted. Orders from these states will be voided
- Cutrine Plus targets all major algae types-planktonic, filamentous, and chara-for total water clarity and balance in lakes, ponds, and reservoirs
$49.31
$73.79 (33% Off)
3
Best Value
37% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

API
37% Off

API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)

API

$21.73

$34.98
(37% Off)

More Details
Main highlights
- Use as directed to keep water safe for fish, pond plants, surrounding wildlife and pets
- Effectively eliminates green water algae, string and hair algae, blanketweed algae and others
- Dose every three days until algae is controlled and then treat weekly
- Controls green water to keep pond water clean and clear in ornamental ponds and water gardens
- Contains one (1) API POND ALGAEFIX Algae Control Solution 32-Ounce Bottle
$21.73
$34.98 (37% Off)
4
10% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

API
10% Off

API POND ALGAEFIX Algae Control 1-Gallon Bottle

API

$45.00

$50.53
(10% Off)

More Details
Main highlights
- This EPA-registered pond algaecide will not harm fish, plants, surrounding wildlife and pets when used as directed
- Helps resolve algae problems and controls the formation of new algae; works fast; effectively controls most types of algae including green water (Chlorella), string and hair algae (Cladophora), blanket weed algae (Oedogonium) in ponds, koi ponds and fountains
- Does not contain copper
- Contains one (1) API POND ALGAEFIX Algae Control 1-Gallon Bottle; treats up to 38,400 U.S Gallons
- Before use, make certain that the pond/fountain has vigorous aeration; thoroughly mix into pond/fountain water and disperse evenly; Repeat dose every three days until algae is controlled; dose weekly to keep pond or fountain clean and clear and to reduce maintenance
$45.00
$50.53 (10% Off)
5
12% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MICROBE-LIFT
12% Off

MICROBE-LIFT ALGA08 Algaway 5.4 Algae Control Treatment for Ponds and Water Gardens, Safe for Koi Fish, Goldfish, Plants, and Decorations, 8 Ounces

MICROBE-LIFT

$9.50

$10.89
(12% Off)

More Details
Main highlights
- POND LIFE NOTES: Algaway 5.4 is 100% safe for all pond fish and plants which sets it apart from similar products; Not to be used with snails, shrimp and other crustaceans or mollusks
- PART OF MICROBE-LIFT'S POND CARE SYSTEM: Use Algaway 5.4 with other great products for your large or small backyard pond: PL Pond Bacteria and Outdoor Water Garden Cleaner, Sludge-Away Sludge and Muck Remover, Barley Straw Extract, and more
- KEEPS PONDS CLEAN & CLEAR: Algaway 5.4 is an E.P.A.-registered beneficial algaecide for outdoor ponds and other water features; It controls string algae, suspended algae blooms, and stops algae growth, creating a cleaner aquatic environment
- IMPORTANT NOTES: In ponds, ensure that water is well aerated via waterfall, fountain or other method to prevent fish loss; Aeration must be continuous; Highly concentrated formula shows results as little as 2 days; See usage chart for application guidance
- CLEARER WATER: Algaway 5.4 Controls algae growth and eliminates green water in your self-contained ornamental pond; This allows you get more enjoyment from your fish and plants and see them clearly in any season
$9.50
$10.89 (12% Off)

Best algae control for ponds - Holiday Sale 2025

Cutrine-Plus Granular Algaecide 30 lbs EPA-Approved Copper-Based Treatment for Chara, Filamentous, and Planktonic Algae, Fast-Professional Level Algae Control

Cutrine-Plus Liquid Algaecide - 1 Gallon EPA-Approved Copper Formula for Fast Control of Planktonic, Filamentous and Chara Algae - Professional-Grade for Ponds, Lakes, Hatcheries & Irrigation Systems

API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)

API POND ALGAEFIX Algae Control 1-Gallon Bottle

MICROBE-LIFT ALGA08 Algaway 5.4 Algae Control Treatment for Ponds and Water Gardens, Safe for Koi Fish, Goldfish, Plants, and Decorations, 8 Ounces

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