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WinterGard Cold Water Bacteria 10 lb

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  • Cold Water Bacteria for Pond
  • Cold Water Beneficial Bacteria
  • Winter Pond Treatment
  • Fall Prep For Pond
  • Pond bacteria for large pond
  • Pond Cold Water Bacteria
  • Fall Winter Prep - Pond Bacteria Treatment
  • Pond Cleaner Safe for Animals


Cold Water Bacteria for Ponds

Safeguard pond health when water temperature is between 38 and 60 degrees F.  

  • Protects pond against winter water quality issues
  • Powerful Spring, Fall, & Winter pond cleaner
  • Safe for fish, wildlife, and pets
  • Ideal pond starter treatment in early Spring
  • Easy to apply! Just toss water soluble packets into the pond and watch the water quality improve

WinterGard is a blend of cold water bacteria strains for treating large ponds.

Treat with WinterGard while leaves and dying vegetation accumulate in fall and winter months. Leaves and dead vegetation turn to muck which create water quality issues. WinterGard protects your pond from winter water issues that arise from increasing nutrient levels.

Ideal for use in ponds as temperatures drop in Fall and in early Spring before water temperature reaches 60 degrees. The blend of winter bacteria and enzymes produce optimal results during cooler months.

10 lb pail treats 0.25 acre pond for 5 months

Includes 20 water soluble packets that weigh 0.5 lbs each

Cold water bacteria for ponds

 WinterGard Treatment Instructions:

Water soluble packets dissolve quickly in water. Simply toss packets into pond every 2 weeks.

Apply 2 packets per 1/4 acre. Apply 8 packets per 1 acre pond. 

WinterGard Treatment 

1/4 acre pond 2 packets
1/2 acre pond 4 packets
3/4 acre pond 6 packets
1 acre pond 8 packets
2 acre pond 16 packets
*Dosage can be doubled for initial treatment

Pond treatment safe for fish, wildlife, and recreational use immediately after application.

What is WinterGard?

Special blend of cold water bacteria, enzymes, and stimulants in water soluble packets

What makes this pond treatment special?

This formula hits peak performance when water temperature drops in fall and winter. 

What does WinterGard do?

It protects the pond and fish from winter water quality issues like rising nutrients and accumulating waste. These issues trigger algae blooms, reduce clarity, and decrease oxygen levels.


Boost results by combining WinterGard with Pondzilla Pro.

 Winter pond treatment cold water bacteria

While WinterGard is reducing nutrients and organics, Pondzilla accelerates the breakdown time of new leaves falling into the pond. Over time leaves break down into muck which is consumed by bacteria like WinterGard. Adding Pondzilla to your fall treatment schedule reduces the time it takes for leaves to turn to muck and then be consumed by pond bacteria.

When to use WinterGard with Pondzilla

Use both products anytime water is below 60 degrees and there is an abundance of leaf build up.

Safe to apply WinterGard and Pondzilla at the same time

Fall Pond Treatment Combo Instructions

  1. Toss recommended number of WinterGard Packets into pond
  2. Mix recommended volume of Pondzilla with water and spray in areas where leaves accumulate
  3. Repeat application every 2 weeks

WinterGard Treatment 

1/4 acre pond 2 packets
1/2 acre pond 4 packets
1 acre pond 8 packets
2 acre pond 16 packets


Pondzilla Treatment

Pond Size Pondzilla Water
1/4 acre pond 32 oz 2 gallons
1/2 acre pond 64 oz 4 gallons
1 acre pond 1 gallon 8 gallons
2 acre pond 2 gallons 16 gallons



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Additional Information

Bacteria - Enzymes
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