---
product_id: 412306470
title: "Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water"
brand: "pond worx"
price: "€ 64.82"
currency: EUR
in_stock: true
reviews_count: 5
category: "Pond Worx"
url: https://www.desertcart.it/products/412306470-pond-worx-bacteria-concentrated-and-formulated-for-water-features-safe
store_origin: IT
region: Italy
---

# Safe for koi & aquatic life Treats up to 2,500 gallons Concentrated bacteria formula Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water

**Brand:** pond worx
**Price:** € 64.82
**Availability:** ✅ In Stock

## Summary

> 💦 Clear water, happy koi, zero hassle—your pond’s new best friend!

## Quick Answers

- **What is this?** Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water by pond worx
- **How much does it cost?** € 64.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/412306470-pond-worx-bacteria-concentrated-and-formulated-for-water-features-safe)

## Best For

- pond worx enthusiasts

## Why This Product

- Trusted pond worx brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive Coverage Power:** One 16oz bottle treats up to 2,500 gallons—perfect for large ponds and water gardens alike.
- • **Recreation-Ready Water:** Swim, fish, or relax right after application—no downtime, just pure pond perfection.
- • **Eco-Friendly & Fish-Safe:** Formulated to protect koi, plants, and wildlife, so your ecosystem thrives without compromise.
- • **Instant Sludge Breakdown:** Watch muck vanish as PondWorx bacteria get to work immediately, restoring crystal-clear water.
- • **Synergistic Ecosystem Support:** Designed to work with other PondWorx products for a balanced, healthy aquatic environment.

## Overview

PondWorx Bacteria is a concentrated liquid treatment designed to rapidly break down sludge and muck in ponds up to 2,500 gallons. Safe for koi, plants, and wildlife, it restores water clarity and oxygen balance without interrupting recreational use. Ideal for large ponds, water gardens, and koi habitats, it supports a healthy, balanced aquatic ecosystem.

## Description

Ornamental water gardens and ponds are enclosed ecosystems, sometimes factors like fish load, uneaten fish food, organics such as leaves, sludge and unwanted debris may disrupt the balance. Leaves, grass clippings, algae, uneaten fish food, fish waste, and decaying plants all contribute to build-up of sludge which is not only unsightly, but unhealthy, as it consumes oxygen.

Review: My small koi pond was full of algae due to direct sunlight for more than 10 hours a day. Despite 2 UV lamps algae still cover 70% of the sides and base. 2 weeks after applying Pondworx the base and sides began to clear up to 40% and the aeration pumps also became more vigorous! Bought second bottle already!
Review: My garden has a very large natural pond which unfortunately had a problem with biofilm. I used the full container of PondWorx Pond Bacteria and the following day the pond was much improved; a couple of days on and the pond has greatly improved and the water is clear. I can actually see the fish again, which by the way are unharmed. I would definitely recommend and will continue to use periodically or should the pond have another problem with biofilm. Depending on the size of your pond it could become expensive, however this works.

## Features

- Once applied, Pondworx Bacteria will instantly get to work on muck and sludge
- This concentrated formulated is designed for large ponds but also works great in water gardens, koi ponds and other water features and will not harm vegetation, fish or wildlife.
- Treated bodies of water may be used for recreation, fishing, and other activities immediately after applying.
- Pondworx Products are designed to work in conjunction with each other to provide best results to promote and help maintain an ideal ecosystem for your body of water

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B4HLCV8 |
| Allergen Information | Allergen-Free |
| Batteries Included | No |
| Best Sellers Rank | #59,544 in Pet Supplies ( See Top 100 in Pet Supplies ) #100 in Pond Care & Water Treatment |
| Customer Reviews | 4.2 4.2 out of 5 stars (3,505) |
| Date First Available | 21 August 2021 |
| Item Form | Liquid |
| Item Weight | 453 g |
| Item model number | 60036 |
| Package Dimensions | 19.99 x 5.99 x 5.51 cm; 453.59 g |
| Pet Life Stage | Adult |
| Size | 1 Pint (16oz) |
| Specific Uses | water treatment |
| batteries required | No |

## Product Details

- **Brand:** Pond Worx
- **Item form:** Liquid
- **Item weight:** 16 Ounces
- **Liquid volume:** 16 Fluid Ounces
- **Manufacturer:** Pond Worx

## Images

![Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water - Image 1](https://m.media-amazon.com/images/I/61gjVRhwnXL.jpg)
![Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water - Image 2](https://m.media-amazon.com/images/I/819JfWk1Z5L.jpg)
![Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water - Image 3](https://m.media-amazon.com/images/I/81LQhBkj8JL.jpg)
![Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water - Image 4](https://m.media-amazon.com/images/I/81abjk0P6OL.jpg)
![Pond Worx Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water - Image 5](https://m.media-amazon.com/images/I/91R8RaU92cL.jpg)

## Questions & Answers

**Q: How much product do I need?**
A: One gallon of Pond Worx Pond Bacteria will treat one acre with an average depth of 4-6 feet deep.

**Q: Is Pond Bacteria safe for fish?**
A: Yes! When used as directed, Pond Worx Pond Bacteria does not pose risk to fish, vegetation, people, pets, or other various wildlife.

**Q: How long before I see results?**
A: Though Pond Bacteria starts working immediately, it can take up to 90 days for measurable results, depending on the extent of the buildup.

**Q: When should this product be applied?**
A: Pond Bacteria works best in warmer waters. We recommend starting applications in the spring when water temperatures are at least 50˚F or above.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***Y on 7 October 2021*

My small koi pond was full of algae due to direct sunlight for more than 10 hours a day. Despite 2 UV lamps algae still cover 70% of the sides and base. 2 weeks after applying Pondworx the base and sides began to clear up to 40% and the aeration pumps also became more vigorous! Bought second bottle already!

### ⭐⭐⭐⭐⭐ Review
*by A***E on 24 September 2021*

My garden has a very large natural pond which unfortunately had a problem with biofilm. I used the full container of PondWorx Pond Bacteria and the following day the pond was much improved; a couple of days on and the pond has greatly improved and the water is clear. I can actually see the fish again, which by the way are unharmed. I would definitely recommend and will continue to use periodically or should the pond have another problem with biofilm. Depending on the size of your pond it could become expensive, however this works.

### ⭐⭐⭐⭐⭐ Review
*by R***D on 4 December 2025*

This bacteria works great. I start using it in the spring and before long, maybe a couple of months all the sludge in the bottom of the pond is just gone. If you want to accelerate the process, I noticed if you add an air hose to the area it works even faster

## Frequently Bought Together

- Pondworx Pond Bacteria - Concentrated & Formulated for Water Features - Safe for Koi - 16 Ounces & Treats up to 2,500 gallons of Water
- API POND ACCU-CLEAR Pond Water Clarifier 16-Ounce Bottle
- API POND CHLORINE & HEAVY METAL NEUTRALIZER Pond Water Neutralizer 16-Ounce Bottle

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-24*