Airmax® Algae Defense® Algaecide

Airmax® SKU: 530130


Shipping calculated at checkout

Kills Algae and Chara Fast!

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.  Do Not use in ponds with koi, goldfish or trout UNLESS carbonate hardness (KH) is above 50 ppm

Airmax Pond Logic Algae Defense

How to Apply

Mix in a tank sprayer.  Spray algae directly.  Treat only up to half of the pond's surface, waiting 10 to 14 days before treating the second half.  In hot weather or when fish are stressed, treat 1/4 to 1/3 of the pond at a time.  For deeper water, place the sprayer's tip beneath the water's surface. 

Recommended Dosage Rates * Always Read & Follow Product Label Instructions
2,000 Square Feet:

  • 1 Quart Algae Defense
  • 2.5 gallons of water

4,000 Square Feet

  • 2 Quarts Algae Defense
  • 5 gallons of water

8,000 Square Feet:

  • 1 gallon Algae Defense
  • 10 gallons of water

These are recommended dosages only.  Please read entire  product instructions.  Be prepared to remove dead algae from the pond.  Decomposition of dead plant material robs your pond of oxygen and can result in fish death.


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, like our Airmax® Specialty Tank 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® carries no water use restrictions


Available in 1 Gallon Container- Treats 8,000 square feet 


Always read and follow the product instructions carefully.  

Algae Defense Algaecide Product Instructions

Cannot ship to AK, CA, CT, DC, HI, ME, MI, NJ, NY, PR RI, or WA

Interactive Calculators

Refresh your screen to reset the calculators.

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question