---
product_id: 372931709
title: "Bacteria - Concentrated & Formulated for Large s, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre"
brand: "pond worx"
price: "€ 83.90"
currency: EUR
in_stock: true
reviews_count: 5
category: "Pond Worx"
url: https://www.desertcart.sk/products/372931709-bacteria-concentrated-and-formulated-for-large-s-water-features-safe
store_origin: SK
region: Slovakia
---

# Treats up to 0.25 acres of water Safe for koi, plants & wildlife Concentrated formula for rapid action Bacteria - Concentrated & Formulated for Large s, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre

**Brand:** pond worx
**Price:** € 83.90
**Availability:** ✅ In Stock

## Summary

> 🌟 Clear Water, Clear Mind — Elevate Your Pond Game Today!

## Quick Answers

- **What is this?** Bacteria - Concentrated & Formulated for Large s, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre by pond worx
- **How much does it cost?** € 83.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/372931709-bacteria-concentrated-and-formulated-for-large-s-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

- • **Large Pond Power:** One 32-ounce bottle treats up to a quarter-acre, making it perfect for expansive water features and large garden ponds.
- • **Recreation-Ready Water:** Safe for fishing, swimming, and all your favorite water activities right after application—no downtime, just enjoyment.
- • **Eco-Friendly & Fish-Safe:** Formulated to protect your koi, aquatic plants, and local wildlife—because a healthy pond means a thriving ecosystem.
- • **Synergistic Ecosystem Support:** Designed to work seamlessly with other Pond Worx products, ensuring your pond stays balanced and vibrant all season long.
- • **Instant Muck & Sludge Breakdown:** Watch your pond transform as Pond Worx bacteria get to work immediately, clearing sludge and debris for crystal-clear water.

## Overview

Pond Worx Bacteria is a concentrated liquid treatment designed for large ponds and water features, safely breaking down muck, sludge, and organic debris without harming koi, plants, or wildlife. Each 32-ounce bottle treats up to a quarter-acre, delivering rapid water clarity and ecosystem balance, making your pond safe for recreation immediately after use.

## 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: Works for home koi pond - 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: It works - highly recommended - 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 | B09B4TCNH4 |
| Allergen Information | Allergen-Free |
| Best Sellers Rank | #31,917 in Pet Supplies ( See Top 100 in Pet Supplies ) #31 in Pond Care & Water Treatment |
| Brand | Pond Worx |
| Brand Name | Pond Worx |
| Customer Reviews | 4.2 out of 5 stars 3,537 Reviews |
| Item Form | Liquid |
| Item Type Name | water treatment |
| Item Weight | 80 Grams |
| Item form | Liquid |
| Item weight | 80 Grams |
| Liquid Volume | 32 Fluid Ounces |
| Liquid volume | 32 Fluid Ounces |
| Manufacturer | Pond Worx |
| Manufacturer Part Number | 60037 |
| Model Number | 60037 |
| Target Species | Fish |
| UPC | 768980600374 |
| Unit Count | 32 Milliliters |
| Unit count | 32 Milliliters |

## Product Details

- **Brand:** Pond Worx
- **Item form:** Liquid
- **Item weight:** 80 Grams
- **Liquid volume:** 32 Fluid Ounces
- **Unit count:** 32 Milliliters

## Images

![Bacteria - Concentrated & Formulated for Large s, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre - Image 1](https://m.media-amazon.com/images/I/61x1ep6fJZL.jpg)

## Available Options

This product comes in different **Size** options.

## 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

### ⭐⭐⭐⭐⭐ Works for home koi pond
*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!

### ⭐⭐⭐⭐⭐ It works - highly recommended
*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.

### ⭐⭐⭐⭐⭐ Hungry little bacteria
*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 Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond
- API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)
- API POND ACCU-CLEAR Pond Water Clarifier 32-Ounce Bottle

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-05-25*