Top 8 Best Algae Killer For Ponds

of July 2024
1
Best ChoiceBest Choice
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
Crystal Blue
Crystal Blue

10
Exceptional
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2
Best ValueBest Value
API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)
API
API

9.9
Exceptional
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3
API POND ALGAEFIX Algae Control 1-Gallon Bottle
API
API

9.8
Exceptional
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4
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
CrystalClear

9.7
Exceptional
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5
API POND ALGAEFIX Algae Control 64-Ounce Bottle (FF-169D)
API
API

9.6
Exceptional
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6
Pond Sludge Remover  5 Pounds Beneficial Pond Bacteria & Enzyme Treatment - 100% Natural Muck Digester  Safe for All Aquatic Life and Recreation - Made in The USA
Cabin Obsession
Cabin Obsession

9.5
Excellent
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7
BioSafe Systems 3002-8 GreenClean Granular Algaecide String Algae Control for Koi Ponds, Fountains, Waterfalls, Water Features on Contact, 8 lbs, EPA Registered
BioSafe Systems
BioSafe Systems

9.4
Excellent
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8
CrystalClear AlgaeOff Pond Algae Control Treatment, For Cleaner & Clearer Pond Water, EPA Registered Algaecide Water Treatment, Safe for Use in Ponds Containing Fish and Plants, Treats 4,000 sq, 8 lbs
CrystalClear
CrystalClear

9.3
Excellent
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9
Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds
Crystal Blue
Crystal Blue

9.2
Excellent
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10
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, 16 oz with Treatment Booster
Airmax
Airmax

9.1
Excellent
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About Algae Killer For Ponds

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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

Controls many types of algae such as filamentous, chara, planktonic and swimmers itch for a beautiful and safe pond all year long. When used as directed, Crystal Plex is 100 percent safe for humans, fish, livestock, pets, birds, swimming and irrigation. Not for use in Koi, Goldfish, or Trout ponds. Treat only a third to half of your pond at a time. One gallon treats 1 surface acre 1-3 ft deep.

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

Contains one 1 API POND ALGAEFIX Algae Control 32-Ounce Bottle. Effectively controls green water algae, string and hair algae, blanketweed algae. Controls green water to keep pond water clean and clear in ornamental ponds and water gardens. Will not harm fish and plants when used as directed.. Dose every three days until algae is controlled and then treat weekly.

API POND ALGAEFIX Algae Control 1-Gallon Bottle

Contains one 1 API POND ALGAEFIX Algae Control 1-Gallon Bottle treats up to 38,400 U.S Gallons. 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. This EPA-registered pond algaecide will not harm fish, plants, surrounding wildlife and pets when used as directed. Does not contain copper. Before use, make certain that the pondfountain has vigorous aeration thoroughly mix into pondfountain 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.

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

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.. 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.. 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.. 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.. Variety of Applications A great algae maintenance solution for fountains, self-contained aquariums, backyard ponds, lined water gardens, and decorative ponds without any outflow..

API POND ALGAEFIX Algae Control 64-Ounce Bottle (FF-169D)

Contains 1 API POND ALGAEFIX Algae Control 64-Ounce Bottle treats up to 19,200 U.S Gallons. 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. This EPA-registered pond algaecide will not harm fish, plants, surrounding wildlife and pets when used as directed. Does not contain copper. Before use, make certain that the pondfountain has vigorous aeration thoroughly mix into pondfountain 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.

Pond Sludge Remover 5 Pounds Beneficial Pond Bacteria & Enzyme Treatment - 100% Natural Muck Digester Safe for All Aquatic Life and Recreation - Made in The USA

BioSafe Systems 3002-8 GreenClean Granular Algaecide String Algae Control for Koi Ponds, Fountains, Waterfalls, Water Features on Contact, 8 lbs, EPA Registered

GREENCLEAN GRANULAR ALGAECIDE This 8-pound bucket treats and controls algae in up to 16,000 gallons of water for your in-home or residential ponds, fountains, or water features this product can be used while your pond is stocked.. IDEAL FOR PONDS WITH FISH AND AQUATIC LIFE This product is not harmful to fish or aquatic plants when used as directed and can be used while your pond or water feature is fully stocked kill algae and improve water quality while your fish and plants thrive.. CLEAN FORMULA Our clean formula is a great alternative to harsh chemicals and it is chlorine, copper, and phosphate-free that means it wont harm fish or plants and targets the algae in your pond.. WORKS FAST This product is quick and efficient and begins working on contact, killing algae fast you'll see full results in 24 to 48 hours after proper treatment, releasing oxygen to your water feature.. TREATS TWO ALGAES GreenClean Granular Algaecide is effective and offers immediate results when eliminating blue-green and string algae It kills on contact and works best when applied in the early morning hours on calm, sunny days..

CrystalClear AlgaeOff Pond Algae Control Treatment, For Cleaner & Clearer Pond Water, EPA Registered Algaecide Water Treatment, Safe for Use in Ponds Containing Fish and Plants, Treats 4,000 sq, 8 lbs

EPA Registered Algaecide. Safe for Fish. Toxic for Birds, Bees. Works on contact on damp surfaces covered in live algae. Immediately removes string algae, kills algae fast, great for pond clean-outs, rocks and liners. Cannot be shipped to AK, HI, PR or Canada..

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

99 Copper Sulfate Pentahydrate. To be used for large bodies of water, not small decorative ponds, water features, or pools.. Controls most species of algae like filamentous, string algae and swimmers itch. Copper Sulfate should be used as a pond algae treatment on actively growing algae in water temperature above 60F.. Most effective when cast out on top of thick floating algae mats. Be aware of how much vegetation you are treating at one time. Eliminating too much at once can deplete the oxygen levels too quickly for your fish.. Granular Copper Sulfate, 5 lbs. DO NOT use in bodies of water that include Koi, Goldfish, Trout, or Grass Carp. These types of fish are sensitive to copper sulfate products..

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, 16 oz with Treatment Booster

Powerful formula KnockDown Defense eliminates a variety of invasive weeds and algae including floating algae, watermeal, duckweed, watermilfoil, fanwort, hydrilla, and more. KnockDown Defense is eective in ponds, lakes, and slow moving or inactive water such as canals.. Fast results Whether youre dealing with oating algae or submerged aquatic plants, KnockDown works fast to eliminate algae and weeds to restore your pond or lake in 3-5 days.. Liquid formulation KnockDown Defense is a liquid algae control and aquatic herbicide that is easy to measure, mix, and apply. For best results, apply aquatic weed control treatment with a surfactant and a tank sprayer.. Innovative solution KnockDown Defense is a fast-acting and long-lasting combination treatment for both algae and pond weed control. Developed to be effective on even the toughest invasive lake weeds and algae.. For ponds lakes KnockDown Defense provides fast-acting, long-lasting pond weed control. Use 0.75-1.5 fluid ounces of KnockDown Defense for every 18 acre or roughly 5,500 sqft. Use as directed. Cannot ship to AE AK AP CA CT DC HI ME NJ NY PR RI WA VT.