- Quickly Eliminate Algae & Chara
- Fast Acting Liquid Formula
- Spray Directly Onto Algae Blooms
Eliminate algae blooms and green water from your pond with Pond Logic® Algae Defense®. A fast-acting, liquid, pond algaecide formula, Algae Defense® can be directly applied via a pressurized sprayer to combat floating filamentous algae, chara or the planktonic algae that causes green water. Each gallon of Algae Defense® treats up to 8,000 square feet and can be used when water temperatures are at or above 60°F.
||Use When Above 60°F
|Square Footage Per Gallon
||Up to 8,000 Square Feet
Treatment Booster™ PLUS
|1,000 Square Feet
||1/2 Quart (16 Ounces)
|2,000 Square Feet
||1 Quart (32 Ounces)
|4,000 Square Feet
||2 Quarts (64 Ounces)
|8,000 Square Feet
||4 Quarts (1 Gallon)
Please note: Above are recommendations. Always read the product label.
How To Apply Algae Defense®
Mix the amount of Algae Defense® and Treatment Booster™ PLUS (if using) with pond water in a tank sprayer according to label instructions. Use a pressurized pond sprayer to spray the Algae Defense® mixture directly onto to the target algae. Treat only up to half of the pond's surface and wait 10-14 days before a second treatment. In hot weather or when fish are stressed, treat only 1/4 - 1/3 of the pond's surface at a time. Over time, the algae will begin to brown and die. Once it is completely dead, use a rake, like the Pond & Beach Rake, to remove dead algae away to prevent an accumulation of dead algae and muck.
When To Apply Algae Defense®
Algae Defense® should be applied when algae is actively growing. Begin applications when algae first appears. Unless steps are taken to reduce the overall nutrients in the pond, multiple applications may be needed for full season algae control. Use with Treatment Booster™ PLUS for best results.
- Do not use in ponds with koi, grass carp or goldfish. Not for use in water garden or koi ponds.
- Do not use in ponds with trout, unless carbonate hardness is above 50ppm.
Here are the replacement parts for Pond Logic ® Algae Defense ® .
The first step towards effectively treating any pond weed is proper identification. Pond Logic® Algae Defense® is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.