Algae Defense


Fast Acting Aquatic Algaecide

  • Eliminate both floating & suspended algae
  • Fast-acting liquid formula
  • Treats up to 8,000 square fee
SKU: 895394000398 Category:

Formulated for fast acting results, Pond Logic® Algae Defense® can be applied directly to troublesome algae and chara to treat both floating and bottom forming algae. Algae Defense® carries no water use restrictions making it great for fresh water lakes, potable water reservoirs, and game fish ponds and water treated with Algae Defense® may be used immediately for recreational activities, drinking and irrigation.

weed id thumb string algae
String Alage
weed id thumb chara


Algae Defense® Dosage Rates
Treatment Area
(In Square Feet)
Algae Defense®
(In Gallons)
(In Gallons)
2,000 Sq. Feet ¼ Gallon 2½ Gallons
4,000 Sq. Feet ½ Gallon 5 Gallons
8,000 Sq. Feet 1 Gallon 10 Gallons

When To Use Algae Defense®

Algae Defense® should be applied to target algae while it is active and growing. The active ingredients in Algae Defense® will be absorbed by the plant killing it entirely.

How To Use Algae Defense®

Mix the desired amount of Algae Defense® and pond water in accordance to label directions. Using a pressurized sprayer; spray the Algae Defense® mixture directly onto target algae. Overtime treated algae will begin to brown and die. Once it is completely dead, rake the dead algae away to prevent an accumulation of plant decay and pond muck.

Algae Defense® Water Use Restrictions

Algae Defense® is not recommended to be used in ponds with koi, goldfish, grass carp, or trout, unless carbonate hardness is above 50ppm.

State Restrictions:
Algae Defense® can not be shipped to Alaska, California, Connecticut, District of Columbia, Hawaii, Maine, New Jersey, New York, Puerto Rico, Rhode Island or Washington.

Pond Logic® Algae Defense® – Product Video

Additional information

Weight 9 lbs
Dimensions 7 × 4 × 11 in


There are no reviews yet.

Be the first to review “Algae Defense”

This site uses Akismet to reduce spam. Learn how your comment data is processed.