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Best algae pond cleaners - May 2026

Last Updated - May 19, 2026

1
Best Choice

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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.

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

CrystalClear

$54.99

More Details
Main highlights
- Will Not Harm Koi & Ornamental Plants: Algae D-Solv contains no copper and will not harm fish or decorative plants when used as directed. Before using algae treatment, ensure pond has aeration.
- Variety of Applications: A great algae maintenance solution for fountains, self-contained aquariums, backyard ponds, lined water gardens, and decorative ponds without any outflow.
- No More Green Water: Perfect for controlling existing algae blooms and getting your pond back on track to being clean and clear. An easy-to-use alternative to draining and scrubbing your entire pond.
- Highly Effective Algaecide: Fast-acting, broad-spectrum algae remover effective in controlling many different types of algae including green water algae, string or hair algae, and blanketweed.
- Easy Application: Apply 1 fl oz Algae D-Solv per 360 gallons of water. Once pond algae growth is under control, weekly doses will control algae growth and reduce pond maintenance.
$54.99
2

✖
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.

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

CrystalClear

$54.99

More Details
Main highlights
- Will Not Harm Koi & Ornamental Plants: Algae D-Solv contains no copper and will not harm fish or decorative plants when used as directed. Before using algae treatment, ensure pond has aeration.
- Variety of Applications: A great algae maintenance solution for fountains, self-contained aquariums, backyard ponds, lined water gardens, and decorative ponds without any outflow.
- No More Green Water: Perfect for controlling existing algae blooms and getting your pond back on track to being clean and clear. An easy-to-use alternative to draining and scrubbing your entire pond.
- Highly Effective Algaecide: Fast-acting, broad-spectrum algae remover effective in controlling many different types of algae including green water algae, string or hair algae, and blanketweed.
- Easy Application: Apply 1 fl oz Algae D-Solv per 360 gallons of water. Once pond algae growth is under control, weekly doses will control algae growth and reduce pond maintenance.
$54.99
3

✖
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

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

API

$23.41

More Details
Main highlights
- 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.
- 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
- 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
- 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 32 fl oz for treating up to 9,600 gallons
$23.41
4

✖
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

API POND ALGAEFIX Algae Control 1-Gallon Bottle

API

$48.62

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
$48.62
5
Best Value

✖
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

API POND ALGAEFIX Algae Control 1-Gallon Bottle

API

$46.19

$48.62
(5% 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
$46.19
$48.62 (5% Off)

Best algae pond cleaners - May 2026

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

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

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

API POND ALGAEFIX Algae Control 1-Gallon Bottle

API POND ALGAEFIX Algae Control 1-Gallon Bottle

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