The Pond Guy® Nature's Defense®

Pond Health & Balance

  • Promote A Healthy Ecosystem
  • Eliminate Excess Nutrients
  • Seed & Maintain Biological Filters

Use The Pond Guy® Nature's Defense® to promote a healthy and thriving ecosystem in your pond resulting in clear water. Nature's Defense® comes in no-mess, easy-to-apply water soluble packets. The natural bacteria in this product instantly activates as it hits the water and multiples every 20-40 minutes to start digesting the dead organics in the pond, such as fish waste, uneaten food, and leaves. Nature's Defense® eliminates excess nutrients such as phosphates and nitrogen. Use Nature's Defense® to both seed and maintain your biological filters, resulting in reduced levels of ammonia and a crystal clear pond.

Formerly a Pond Logic® Water Garden Treatment: Pond Logic® Nature's Defense® is now only available under The Pond Guy® brand. Pond Logic® water garden treatments are now exclusively offered through The Pond Guy®. The Pond Guy® branded products will have the same great quality and value, the same 100% money back guarantee, just all new packaging.

Tech Specs

Usage Information

6 Packets
12 Packets
24 Packets
96 Packets
Application Packet Packet Packet Packet
Active Temp Above 50°F Above 50°F Above 50°F Above 50°F
Months of Treatment For 1,000 Gallons 3 Months 6 Months 12 Months 48 Months
Shelf Life 5 Years 5 Years 5 Years 5 Years

Dosage Rates

Pond Size (In Gallons)
Initial Dose
Maintenance Dose (Every 2 Weeks)
Up To 1,000 2 Packets 1 Packet
Up to 2,000 3 Packets 2 Packets
Up to 3,000 4 Packets 3 Packets
Up to 4,000 5 Packets 4 Packets
Up To 5,000 6 Packets 5 Packets

How To Apply Nature's Defense®

Do not open packets. Simply toss Nature's Defense® in your pond, filter or skimmer.

When To Apply Nature's Defense®

For best results, apply every 2 weeks when water temperatures are above 50°F.


When used in accordance with label directions The Pond Guy® Nature's Defense® is completely safe for fish, plants, pets and pond wildlife.


Replacement Parts

Here are the replacement parts for The Pond Guy ® Nature's Defense ® .

Weeds Treated

The first step towards effectively treating any pond weed is proper identification. The Pond Guy® Nature's Defense® is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.

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