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The Secret to a Crystal Clear Pond and Thriving Koi

Stop fighting cloudy water, foul odors, and stubborn bottom sludge. KoiGuard™ All-Season Liquid Beneficial Bacteria is a professional-grade, easy-to-use liquid formula designed to rapidly establish and support a flawless biological balance in your water garden.

Packed with literally billions of beneficial bacteria, our proprietary blend doesn't just treat the symptoms of poor water quality—it attacks the root cause. By aggressively outcompeting harmful bacteria and breaking down organic waste, KoiGuard™ optimizes your water quality to support your koi’s natural immunity, keeping them vibrant, active, and healthy.

Why Choose KoiGuard All-Season Liquid Beneficial Bacteria?

  • Rapidly Promotes Water Clarity: Eliminates the organic contaminants that cause stubborn cloudiness and murky water.
  • Supercharges Your Biofilter: Seeds your biological filtration system with vigorous, hungry bacteria that process excess nutrients before they ruin your water quality.
  • Breaks Down Bottom Sludge: digests fish waste, decaying leaves, and uneaten food, reducing the dangerous muck at the bottom of your pond.
  • Eliminates Foul Odors: Neutralizes the sulfur and ammonia spikes that cause your pond to smell bad.
  • 100% Safe: Completely non-toxic for all koi, goldfish, wildlife, and aquatic plants when used as directed.

Choose Your Perfect Size

Whether you have a tranquil backyard water garden or a massive, custom-built koi habitat, we have the right size for your ecosystem. Calculations are based on the standard weekly routine dose.

  • 16 Fluid Ounces: Treats up to 16,000 Gallons (Perfect for small-to-medium ponds)
  • 32 Fluid Ounces: Treats up to 32,000 Gallons (Ideal for medium-to-large ponds)
  • 1 Gallon (128 oz): Treats up to 128,000 Gallons (The best value for massive water features and professional pond maintenance)

Dosage & Application Guide

For the best results, establish a consistent weekly routine.

Weekly Application Rate

Pond Volume

Koi Ponds (500 gal /oz)

Water Gardens (1000 gal /oz)

1,000 Gallons

2 fl oz

1 fl oz

5,000 Gallons

10 fl oz

5 fl oz

8,000 Gallons

16 fl oz

8 fl oz

16,000 Gallons

32 fl oz

16 floz

20,000 Gallons 

40 fl oz

20 fl oz

64,000 Gallons

128 fl oz

64 fl oz

Double the dosage for the first dose, or if the temperature is less than 50°F.

Easy Application Steps:

  1. Shake the bottle vigorously before use to wake up the bacteria.
  2. Dilute your recommended dose into at least 1 gallon of pond water in a bucket.
  3. Distribute the mixture evenly across the surface of your pond.

Pro-Tips,

To get the absolute most out of every drop of KoiGuard™, follow these expert guidelines:

  • Manage Your UV Clarifier: Turn off your UV light for 24 hours after a routine application (or 48–72 hours for brand new pond filters) to allow the bacteria to settle in your biofilter without being neutralized.
  • Non-toxic when used as directed. Avoid eye contact and wash hands after use. Store tightly closed in a cool, dry place out of direct sunlight. Do not freeze. For peak performance, use within 12 months of opening.
  • Download SDS Sheet Here (PDF)
  • Oxygen is Key: Always ensure your pond is well-aerated (via waterfalls, spitters, or air stones) when applying. These aerobic bacteria need oxygen to rapidly consume sludge, and aeration keeps your koi safe and breathing easy while the bacteria work!
  • Boost Your Results: For ultimate water clarity, use in conjunction with KoiGuard™ Pond Enzymes.

Made in the USA 🇺🇸

KoiGuard

KoiGuard All-Season Liquid Beneficial Bacteria

SKU:KG-16OZ-ALLS-LIQU

Regular price $19.98 USD
Regular price $23.99 USD Sale price $19.98 USD
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Select a size to see treatment capacity
Size
Quantity

Dosage & Application

Ingredients & Safety

Specifications

SDS & Documentation

Download the Safety Data Sheet and product documentation from our SDS Library.

View full details
Promotes Water Clarity
Boosts Biofilter
Reduces Sludge
Safe for Fish & Plants

Dosing Chart

Pond Volume Day 1 Dose Weekly Dose
500 gal 4 fl oz 2 fl oz
1,000 gal 8 fl oz 4 fl oz
2,500 gal 20 fl oz 10 fl oz
5,000 gal 40 fl oz 20 fl oz

Turn off UV sterilizer for 24 hours after application. Shake vigorously before use.

Effective 50°F – 90°F
Turn off UV for 24 hours after application

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