---
product_id: 67903025
title: "Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 500ml, Treats 4,546 Litres of Pond Water"
brand: "blagdon"
price: "$62.23"
currency: USD
in_stock: true
reviews_count: 13
category: "Blagdon"
url: https://www.desertcart.us/products/67903025-blagdon-pond-duckweed-buster-controls-duckweed-safe-and-natural-500ml
store_origin: US
region: United States of America
---

# Natural bacteria-based formula Treats 4,546L pond water Safe for fish, plants & wildlife Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 500ml, Treats 4,546 Litres of Pond Water

**Brand:** blagdon
**Price:** $62.23
**Availability:** ✅ In Stock

## Summary

> 🌿 Clear your pond, not your conscience!

## Quick Answers

- **What is this?** Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 500ml, Treats 4,546 Litres of Pond Water by blagdon
- **How much does it cost?** $62.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/67903025-blagdon-pond-duckweed-buster-controls-duckweed-safe-and-natural-500ml)

## Best For

- blagdon enthusiasts

## Why This Product

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

## Key Features

- • **Massive Coverage:** One 500ml bottle treats up to 4,546 litres—perfect for large ponds and serious pond keepers.
- • **Fish & Plant Safe:** Guaranteed harmless to all pond fish, plants, filters, and local wildlife—peace of mind included.
- • **Effortless Pond Clarity:** Precisely measure doses with the easy-use dosage chamber—no guesswork, no waste.
- • **Eco-Friendly Algae Control:** Harnesses natural bacteria to starve duckweed without harming your pond’s ecosystem.
- • **Temperature-Optimized Performance:** Works best above 10°C—keep your pond pristine all season long with regular use.

## Overview

Blagdon Pond Duckweed Buster is a 500ml natural bacteria treatment designed to control duckweed by depriving it of nutrients. Safe for fish, plants, and wildlife, it treats up to 4,546 litres of pond water and features an easy-to-use dosage chamber. Most effective at water temperatures above 10°C, it offers an eco-friendly solution for maintaining clear, healthy ponds.

## Description

Free delivery and returns on eligible orders. Buy Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 500ml, Treats 4,546 Litres of Pond Water at desertcart UK.

Review: Works if you use it as instructed - So duckweed is an absolute pain and just seems to multiply no matter what. Thought I’d try this and it really works if you use it properly. As others have pointed out, that means getting rid of as much duck weed as possible (I certainly got most of it, but not all the stuff buried in the pond plants). Yes, that’s a pain to do with a net and bucket, but essential. Despite the on-pack suggestion to repeat after 7 days, my first dose has left the pond completely free of the duckweed after 3 weeks, so for once I’m impressed with a Blagdon product.
Review: Didn’t work for me - Doesn’t work!!

## Features

- Use biocides safely. Always read the label and product information before use.
- A natural bacteria that controls duckweed efficiently by starving the plant of essential nutrients
- Harmless to pond filters and all species of pond fish and plants and water using wildlife
- Easy to use dosage chamber on top of bottle makes it simple to measure the correct dose for your pond
- Follow instructions on the back of pack for dosing requirements for your pond. This product cannot be overdosed
- This product is most effective when the pond water temperature is 10°C or higher, use regularly until the duckweed has cleared

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003EH3ZDK |
| Best Sellers Rank | 34,805 in Garden ( See Top 100 in Garden ) 116 in Water Garden & Pond Treatment |
| Customer Reviews | 3.3 3.3 out of 5 stars (628) |
| Date First Available | 8 Aug. 2009 |
| Item model number | BD2765 |
| Item volume | 500 Millilitres |
| Manufacturer | Interpet Ltd |
| Part number | 2765 |
| Power source type | Air Powered |
| Product Dimensions | 20 x 12 x 6 cm; 557.92 g |

## Product Details

- **Brand:** Blagdon
- **Item form:** Liquid
- **Item weight:** 557.92 Grams
- **Liquid volume:** 500 Millilitres
- **Manufacturer:** Interpet Ltd

## Images

![Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 500ml, Treats 4,546 Litres of Pond Water - Image 1](https://m.media-amazon.com/images/I/61HLjTU1+QL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works if you use it as instructed
*by C***. on 12 June 2025*

So duckweed is an absolute pain and just seems to multiply no matter what. Thought I’d try this and it really works if you use it properly. As others have pointed out, that means getting rid of as much duck weed as possible (I certainly got most of it, but not all the stuff buried in the pond plants). Yes, that’s a pain to do with a net and bucket, but essential. Despite the on-pack suggestion to repeat after 7 days, my first dose has left the pond completely free of the duckweed after 3 weeks, so for once I’m impressed with a Blagdon product.

### ⭐⭐⭐⭐ Didn’t work for me
*by B***N on 13 September 2025*

Doesn’t work!!

### ⭐⭐⭐ Didn’t clear it fully
*by L***. on 25 August 2025*

Got this to clear duckweed but it’s not completely gone looks like I’m going to have to buy something else

## Frequently Bought Together

- Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 500ml, Treats 4,546 Litres of Pond Water
- Blagdon Pond Sludge Buster, Digests Harmful Organic Waste, Introduces Good Bacteria, Keeps Pond Clean, 4 x 9g Sachets, Each Sachet Treats 2,273 Litres
- Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-20*