---
product_id: 355949137
title: "Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond"
brand: "pond worx"
price: "7315 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Pond Worx"
url: https://www.desertcart.is/products/355949137-pondworx-pond-bacteria-concentrated-and-formulated-for-large-ponds-water
store_origin: IS
region: Iceland
---

# Safe for koi, plants & wildlife Concentrated formula for large ponds Visible clarity in ~2 weeks Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond

**Brand:** pond worx
**Price:** 7315 kr
**Availability:** ✅ In Stock

## Summary

> 🌊 Clear water, clear mind—make your pond the envy of every backyard.

## Quick Answers

- **What is this?** Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond by pond worx
- **How much does it cost?** 7315 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/355949137-pondworx-pond-bacteria-concentrated-and-formulated-for-large-ponds-water)

## 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

- • **Recreational Ready:** Pond remains safe for fishing, swimming, and relaxation immediately after application—no downtime.
- • **Eco-Friendly & Safe:** Formulated to protect koi, aquatic plants, and local wildlife—no compromises on ecosystem health.
- • **Rapid Clarity Boost:** Transforms murky water to crystal clear in as little as two weeks—see the difference fast.
- • **Seamless Integration:** Works synergistically with other Pondworx products for a balanced, thriving pond environment.
- • **Powerful Concentration:** Treats up to a quarter-acre pond with just 32 oz—efficiency meets scale.

## Overview

Pondworx Pond Bacteria is a concentrated liquid treatment designed specifically for large ponds up to a quarter-acre. It rapidly breaks down muck and sludge without harming koi, plants, or wildlife, delivering crystal-clear water in about two weeks. Safe for immediate recreational use, it supports a healthy aquatic ecosystem and pairs perfectly with other Pondworx products for ongoing pond maintenance.

## Description

desertcart.com: Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond

Review: Worth trying for at least a season - Pros: This really works on clearing my 1/3 acre pond. It went from brownish water to crystal clear in about two weeks. No negative impact on the pond in any way. I used a full jug since the pond is about 13 ft at the deepest and averages 6 ft. Cons: The water will start to revert back if you don’t apply again every 2 months.
Review: Worked well for my pond - better than Microbe Lift - Prof - I have 2,200 Gal pond with eight large KOI's, normally water is kept around 1,600 - 1,800 Gal. There are two 75 Gal wells as primary and secondary mechanical + biological filter as there are Matala filters + 6 Gal of K3 Filter media in there. Both wells are constantly aerated ensure full circulation and to help those bacteria breath a little better. Then another 3500 AquaScape filter + 28W UV and another external 36W UV. For the past 3 years, I've been using Microbe Lift Prof - with a kind of hit and miss result. Hit - during the period where there was less leaves (main culprit is pine needles). Miss - when there were more leaves. As a result, I would have a few weeks of crystal clear water then slowly murky from sludge after 4 weeks . . by the time it hit 6-8 weeks, I must change 30% - 40% of water. Even at this maintenance routine, I began to have green algae growing thicker on all pond walls and water began to turn light green. The foamy gunk is becoming more of an eye soar, . . . I realized that to get out of this cycle, I need to try something different. Having read a lot of reviews, I decided to give Pond Worx a try toward end of April'19. I use a a slightly higher dose than recommended, i.e., first time 16 oz, then 8 - 10 oz. weekly. - First 3 weeks - - I pour Pond Worx in the main part of the pond (where the KOI's are). It does not turn crystal clear yet but it did not get worse either. I review more reviews of Pond Worx and see someone saying the bacteria need good aeration to get better result, so, I gave it a try. - I added Pond Works to the 2 wells instead.Then, turned off the pump and let it sit aerated there for 3-4 hrs (or longer). Then turn on the pump. Within 5 days, the pond became crystal clear. Foamy gunk is still there but much less. I have maintain this weekly routine for another 6 weeks and the water is now crystal clear, algae on the walls are almost gone. So far, from W1 - W9, I did not do any major Water change. Just add more refill to replenish those the evaporated during the the very hot month of June. So far, I'm quite satisfy with this product and about to re-order.

## 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 |
|---------------|-------|
| Brand | Pond Worx |
| Customer Reviews | 4.2 out of 5 stars 3,589 Reviews |
| Item Form | Liquid |
| Item Weight | 80 Grams |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Energen |
| UPC | 768980600374 |

## Product Details

- **Brand:** Pond Worx
- **Liquid Volume:** 32 Fluid Ounces
- **Item Weight:** 80 Grams
- **Item Form:** Liquid
- **Manufacturer:** Energen

## Images

![Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond - Image 1](https://m.media-amazon.com/images/I/61x1ep6fJZL.jpg)
![Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond - Image 2](https://m.media-amazon.com/images/I/81MMhirESYL.jpg)
![Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond - Image 3](https://m.media-amazon.com/images/I/81abjk0P6OL.jpg)
![Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond - Image 4](https://m.media-amazon.com/images/I/81g1F+IZdhL.jpg)
![Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond - Image 5](https://m.media-amazon.com/images/I/81pWLd3ae9L.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

### ⭐⭐⭐⭐⭐ Worth trying for at least a season
*by C***S on September 28, 2025*

Pros: This really works on clearing my 1/3 acre pond. It went from brownish water to crystal clear in about two weeks. No negative impact on the pond in any way. I used a full jug since the pond is about 13 ft at the deepest and averages 6 ft. Cons: The water will start to revert back if you don’t apply again every 2 months.

### ⭐⭐⭐⭐⭐ Worked well for my pond - better than Microbe Lift - Prof
*by N***7 on June 8, 2019*

I have 2,200 Gal pond with eight large KOI's, normally water is kept around 1,600 - 1,800 Gal. There are two 75 Gal wells as primary and secondary mechanical + biological filter as there are Matala filters + 6 Gal of K3 Filter media in there. Both wells are constantly aerated ensure full circulation and to help those bacteria breath a little better. Then another 3500 AquaScape filter + 28W UV and another external 36W UV. For the past 3 years, I've been using Microbe Lift Prof - with a kind of hit and miss result. Hit - during the period where there was less leaves (main culprit is pine needles). Miss - when there were more leaves. As a result, I would have a few weeks of crystal clear water then slowly murky from sludge after 4 weeks . . by the time it hit 6-8 weeks, I must change 30% - 40% of water. Even at this maintenance routine, I began to have green algae growing thicker on all pond walls and water began to turn light green. The foamy gunk is becoming more of an eye soar, . . . I realized that to get out of this cycle, I need to try something different. Having read a lot of reviews, I decided to give Pond Worx a try toward end of April'19. I use a a slightly higher dose than recommended, i.e., first time 16 oz, then 8 - 10 oz. weekly. - First 3 weeks - - I pour Pond Worx in the main part of the pond (where the KOI's are). It does not turn crystal clear yet but it did not get worse either. I review more reviews of Pond Worx and see someone saying the bacteria need good aeration to get better result, so, I gave it a try. - I added Pond Works to the 2 wells instead.Then, turned off the pump and let it sit aerated there for 3-4 hrs (or longer). Then turn on the pump. Within 5 days, the pond became crystal clear. Foamy gunk is still there but much less. I have maintain this weekly routine for another 6 weeks and the water is now crystal clear, algae on the walls are almost gone. So far, from W1 - W9, I did not do any major Water change. Just add more refill to replenish those the evaporated during the the very hot month of June. So far, I'm quite satisfy with this product and about to re-order.

### ⭐⭐⭐⭐ Works, but don't expect miracles.
*by O***G on September 1, 2025*

It works but I can not honestly tell you how well. Our pond had a massive algae outbreak and after using an algae control product, we had a lot of muck on the surface and on the bottom of the pond. We put in one gallon a week for 4 weeks and saw a change in the ponds health. It did not harm the large mouth Bass, tilapia or bait fish. I purchased it again to continue the cleanup. One thing it does mention. Algae control products can effect the bacteria so don't use them at the same time.

## 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 Iceland*
*Store origin: IS*
*Last updated: 2026-01-26*