Pond Logic® Seasonal Defense®
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$16.99 - $139.99


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
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  • Details
  • Usage
  • Reviews
Pond Logic Seasonal defense
  • One Product For 3 Seasons
  • Accelerate Debris Decomposition
  • No Mess Water Soluble Packets

Pond Logic® Seasonal Defense® is formulated for the cooler months of the season. Seasonal Defense® accelerates the decomposition of leaves, scum, and sediment that create pond muck during the fall and winter months. In the spring Seasonal Defense® replenishes winter bacteria loss, jump starts your biological filters and breaks down unwanted waste. Use Seasonal Defense® to maintain your pond through the cooler part of the season and give yourself a head start on your summer pond management.

Pond Logic® Seasonal Defense® can also be found in the DefensePAC®.

Usage Information

From dosage rates to product labels, the USAGE tab contains all of the information you need to properly apply your pond care products.

6 Packets
12 Packets
24 Packets
96 Packets
Application Packet Packet Packet Packet
Active Temp Below 50°F Below 50°F Below 50°F Below 50°F
Months Of Treatment For 1,000 Gallons 1.5 Months 3 Months 6 Months 24 Months
Shelf Life 5 Years 5 Years 5 Years 5 Years

Dosage Rates

Pond Size (In Gallons)
Seasonal Defense® (Weekly)
Up To 1,000 1 Packet
1,001 - 2,000 2 Packets
2,001 - 3,000 3 Packets
3,001 - 4,000 4 Packets
4,001 - 5,000 5 Packets

How To Apply Seasonal Defense®

Do not open packets. Add the appropriate number of water soluble packets using the dosage chart above, evenly dispersing them around your pond. Packets will dissolve when placed in the pond water.

When To Apply Seasonal Defense®

Seasonal Defense® should be used in late autumn and early spring. Autumn applications should begin when water temperatures fall below 50°F. Spring applications should begin at pond startup or just after ice melt.


When used in accordance with label directions Pond Logic® Seasonal Defense® is completely safe for fish, plants, pets and pond wildlife.


What others are saying

5 out of 5

Customer Rating

"Seasonal defense helps"Larry S. of Knoxville, TN

I used seasonal defense last fall and getting my pond going this spring seems like a breeze. It must have dissolved most of the leaves, there was hardly any debris. I have also used it as suggested this spring and the pond is looking great. Any thing that makes the spring cleanout easier, is worth its weight in gold!I am still getting a pond vac when I can talk my wife into it!!!

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5 out of 5

Customer Rating

"Easy To Use"Lisa of Dover, DE

Seasonal Defense works great and is easy to use. Just toss the amount of packets, as the directions state, into the water. It takes care of the guesswork.

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5 out of 5

Customer Rating

"Love it!"Bruce Rifenburg of Williamsville, NY

NY Koi pond. Having the help of PondGuy people got me clear water finally! Seasonal Defense worked perfect to clear water after a Falls remodeling. The other half of the clear water solution is Natures Defense! The warm water paks! Use both products (at the correct temps) and shazam!

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