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Pond Logic® Algae Defense® Algaecide
Product Warning Cannot be shipped to AE, AK, AP, CA, CT, DC, HI, ME, NJ, NY, PR, RI or WA.
$39.99 - $49.99

Shipping:

This item ships via motor freight and may arrive separate from the rest of your order
This item ships from the manufacturer and may arrive separate from the rest of your order
Live Koi ship from our hatchery and may arrive separate from the rest of your order
Plants ship from our nursery and may arrive separate from the rest of your order
Plants are held in accordance to climate zones. Click for ship dates.
This item ships via ground carrier and will arrive within 4-8 business days
This item carries an additional handling charge of $ per item
4+ $34.99 Each - Gallons / 4+ $44.99 Each - Combos

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Algae Defense® is a fast-acting aquatic algaecide designed to work on a broad spectrum of pond algae. Best results are achieved when Algae Defense® is applied at the first appearance of algae and water temperatures exceed 60° F. Unless steps are taken to reduce the overall nutrients in your pond, multiple applications may be needed for a full season of control. Algae Defense® is a direct substitution for Symmetry®.

Algae Defense® & Cide-Kick™ Dosage Rate:

Recommended Algae Defense® Dosage Rates
Algae Defense® Pond Water
(In Gallons)
Cide-Kick®
(In Ounces)
Max Pond Size
(In Square Feet)
1 Quart 2.5 6 2,000
2 Quarts 5 10 4,000
1 Gallon 10 22 8,000
Use 2 ounces of Cide-Kick™ for every gallon of solution to achieve maximum effectiveness

How To Apply Algae Defense®:
Using the dosage rate chart above mix the appropriate amount of Algae Defense®, water and Cide-Kick™ to treat the affected surface area. 1 gallon of Algae Defense® treats up to 8,000 square feet. The chemical solution can then be applied directly onto the ponds surface where algae are present using an Airmax® Pond Sprayer. More product information and application instructions can be found on the product labels posted below.

When To Apply Algae Defense®:
Best results are achieved when Algae Defense® is applied at the first appearance of pond algae and water temperatures exceed 60° F. Algae Defense® is applied as needed when new algae appears and is not intended to be used as a preventative water treatment.

Purchase Algae Defense® with Cide-Kick™ for maximum results!
Cide-Kick™ surfactant increases the wetting, spreading, sticking and dispersing of aquatic herbicides and algaecides. Cide-Kick™ helps break down the waxy cuticle on the leaf surface and allows chemical applications to penetrate the bud and bark area (of woody brush), resulting in a more effective uptake of the herbicide or algaecide. Cide-Kick™ is a by-product of the citrus industry, a low viscosity oil and is compatible with most aquatic herbicides and algaecides. Simply add 2 ounces of Cide-Kick™ for every gallon of solution (both water and chemical) you mix.

Algae Defense® & Cide-Kick™ Restrictions and Precautions:
  • Algae Defense® may be toxic to Trout and Catfish if carbonate hardness of treated water is less than 50 ppm. Most surface waters exceed this limit and pose no threat. If in doubt use a Water Hardness Test Kit.
  • Do not use if you have Koi or Goldfish.
  • Be sure to provide adequate aeration before applying Algae Defense®, especially during the warmer months. If your pond is not equipped with an aeration system, treat your pond in thirds, waiting 10 - 14 days between treatments to insure safe oxygen levels.
  • Algae Defense® does not carry any water use restrictions. Water treated with Algae Defense® may be used immediately for recreational activities, drinking, livestock, irrigation, ornamental plantings and turf areas.
  • Cide-Kick™ does not carry any water use restrictions.


  • Documentation:
  • View the Algae Defense® MSDS Information
  • View the Algae Defense® Product Label
  • View the Cide-Kick™ MSDS Information
  • View the Cide-Kick™ Product Label


  • Algae Defense® Is Included In The Pond Logic® ClearPAC®
    Pond Logic® Algae Defense® Algaecide
    review
    By Robert Smitth of Flint, MI
    Customer Rating:
      4 out of 5


    for the price its a good item, didnt like spraying under the water, but killed my alergy quick
    Amazing!!!
    By Kay Foutz of Waukee, IA
    Customer Rating:
      5 out of 5


    As suggested...I used with cide kick and how AMAZING they products are. Fast acting too. Got rid of the green icky stuff and now the water is so clear and inviting.
    Algaecide
    By Felix Felde of Bend, OR
    Customer Rating:
      3 out of 5


    We used Algae Defense with Cide Kick on our pond, and after two applications, the algae is only slightly improved. Unfortunately, we learned that hard way that this stuff kills frogs and tadpoles. ALL of them.
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