---
product_id: 16221137
title: "Tsunami DQ Aquatic Herbicide - Gallon - 37.3 Percent Diquat Dibromide - Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More"
brand: "crystal blue"
price: "R5754"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Crystal Blue"
url: https://www.desertcart.co.za/products/16221137-tsunami-dq-aquatic-herbicide-gallon-37-3-percent-diquat-dibromide
store_origin: ZA
region: South Africa
---

# Fast-acting aquatic weed control Safe for fish & wildlife ecosystem 37.3% Diquat Dibromide Concentrate Tsunami DQ Aquatic Herbicide - Gallon - 37.3 Percent Diquat Dibromide - Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More

**Brand:** crystal blue
**Price:** R5754
**Availability:** ✅ In Stock

## Summary

> 🌊 Dominate your waterway weeds before they dominate you!

## Quick Answers

- **What is this?** Tsunami DQ Aquatic Herbicide - Gallon - 37.3 Percent Diquat Dibromide - Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More by crystal blue
- **How much does it cost?** R5754 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/16221137-tsunami-dq-aquatic-herbicide-gallon-37-3-percent-diquat-dibromide)

## Best For

- crystal blue enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Conscious Formula:** Powerful yet safe for fish, wildlife, and aquatic balance when used as directed.
- • **Versatile Application:** Concentrated liquid easily mixes for targeted treatment in lakes, ponds, and canals.
- • **Broad Spectrum Control:** Effectively eliminates duckweed, watermeal, curly leaf, pondweed & more invasive species.
- • **Proven User Satisfaction:** Highly rated with 4.5 stars from 574 reviews, trusted by lakefront property owners.
- • **Rapid Aquatic Weed Eradication:** Kills submerged, floating & emerged weeds within days, restoring water clarity fast.

## Overview

Tsunami DQ is a concentrated aquatic herbicide with 37.3% Diquat Dibromide designed for rapid and effective control of a wide range of aquatic weeds in lakes and ponds. Safe for aquatic life when used as directed, it offers a fast-acting, easy-to-apply solution trusted by thousands to restore and maintain healthy water environments.

## Description

desertcart.com : Tsunami DQ Aquatic Herbicide - Gallon - 37.3 Percent Diquat Dibromide - Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More : Algaecide Water Treatments : Patio, Lawn & Garden

Review: Excellent Rapid Results - We live on a 2,000 acre lake in North Central Florida. Our property has a 600 ft long, 40 ft wide private canal that leads into the lake. During the first part of this year, we experienced a drought that caused the lake level to drop with evaporation. This was the lowest we have seen the water. The low level of the water in the canal spurred crazy growth of weeds its entire length. It was mess that we were concerned as to whether we were going to have to hire a crew to manually remove these massive aquatic weeds of all types in this area. In early June, our rainy season kicked in and within a month, the lake was close to normal level and we had a completely unnavigible canal, that was choked with weeds. No way we were getting our boats out. A few years ago, we had a similar, but not as extreme problem. We tried several herbicides and weed killers that were safe for fish and wildlife and never got anything to kill the weeds back enough to remove them easily. We ended up having to hire a $7,500 crew to manually remove them. This year, we made it a quest to find something that would truly kill off all types of weeds in our canal in a rapid manner. After spending literally hours, reading literature, speaking with our few neighbors, reading reviews to see what's out there REALLY does, and viewing countless videos, we settled on a product that we have never used before, nor had we heard of called TSUNAMI DQ. We mixed as directed and applied it to the entire surface of our canal as well as the weeds themselves with 2 powered Backpack Sprayers. The results were astonishing! Within 24 hours of application, Lilly Pads, Maidencane and other weeds were already brown on exposed parts. Within 5 days, 80% of the weeds, even the tough ones, were brown and dead. Today, we are putting one last coat on the entire canal, wait a week, then drop muck tablets all over the bottom because it's definitely going to need them. This is, by far, the most effective product of its type we have ever used. I don't say this lightly. We have tried just about everything over the years and nothing else that we have tried compares. HIGHLY RECOMMEND THIS PRODUCT ☆☆☆☆☆ 5 Stars!!!
Review: Chemicals are brand name and arrived intact. - The material was well packaged with each jug in a heavy plastic bag. The cardboard box was torn and the tape was coming loose. But everything was protected and sealed and ready for use. The chemicals are the brand name and excellent.

## Features

- This product is not for sale in the following states: AZ, CA, CT, ME, MN, NH, NJ, NY, OR, VT, WA
- Effective Aquatic Weed Control: Tsunami DQ is a Diquat based Aquatic Herbicide that is specifically formulated to target and control a wide range of unwanted aquatic plants and algae, ensuring a cleaner, healthier water environment.
- Fast-Acting Formula: This powerful herbicide delivers rapid results, quickly killing submerged, floating, and emerged aquatic weeds in ponds, lakes, and other water bodies.
- Safe for Water Use: When used as directed, Diquat is safe for fish, wildlife, and other aquatic organisms, making it an ideal solution for maintaining water balance without harming the ecosystem.
- Easy-to-Apply: Comes in a ready-to-mix concentrate that is simple to apply with sprayers, allowing for targeted treatment of problem areas.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004KTL600 |
| Active Ingredients | Herbicide |
| Best Sellers Rank | #49,786 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #286 in Weed Killers |
| Brand | Crystal Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (574) |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 1.5 pounds |
| Item model number | 139 |
| Liquid Volume | 1 Gallons |
| Manufacturer | Jobe's |
| Product Dimensions | 11.3 x 4.59 x 7.23 inches |
| UPC | 768980001393 |
| Unit Count | 128.0 Ounce |

## Product Details

- **Active Ingredients:** Herbicide
- **Brand:** Crystal Blue
- **Item Form:** Liquid
- **Item Weight:** 1.5 Pounds
- **Liquid Volume:** 1 Gallons

## Images

![Tsunami DQ Aquatic Herbicide - Gallon - 37.3 Percent Diquat Dibromide - Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More - Image 1](https://m.media-amazon.com/images/I/813fH4V3E8L.jpg)

## Questions & Answers

**Q: Is Tsunami safe to use with fish?**
A: This product is safe when used according to label directions. When treating excessive pond growth, it is always important to treat in sections to avoid rapid oxygen depletion.

**Q: How often should I use Tsunami DQ?**
A: Tsunami DQ should be used for pond weeds. Wait 14 days between applications and only treat a 1/2 or 1/3 of the pond at a time to recover oxygen levels.

**Q: How do I apply this product?**
A: Tsunami DQ is a contact herbicide. Best results by spraying over top of the growth you are treating.

**Q: How much product do I use?**
A: 2-8 quarts per surface acre depending on infestation & type of weed for aquatics.

**Q: When is the best time to treat my pond weeds?**
A: Pond weeds should be treated when they are actively growing and water temperatures are above 60F.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Rapid Results
*by M***N on July 30, 2025*

We live on a 2,000 acre lake in North Central Florida. Our property has a 600 ft long, 40 ft wide private canal that leads into the lake. During the first part of this year, we experienced a drought that caused the lake level to drop with evaporation. This was the lowest we have seen the water. The low level of the water in the canal spurred crazy growth of weeds its entire length. It was mess that we were concerned as to whether we were going to have to hire a crew to manually remove these massive aquatic weeds of all types in this area. In early June, our rainy season kicked in and within a month, the lake was close to normal level and we had a completely unnavigible canal, that was choked with weeds. No way we were getting our boats out. A few years ago, we had a similar, but not as extreme problem. We tried several herbicides and weed killers that were safe for fish and wildlife and never got anything to kill the weeds back enough to remove them easily. We ended up having to hire a $7,500 crew to manually remove them. This year, we made it a quest to find something that would truly kill off all types of weeds in our canal in a rapid manner. After spending literally hours, reading literature, speaking with our few neighbors, reading reviews to see what's out there REALLY does, and viewing countless videos, we settled on a product that we have never used before, nor had we heard of called TSUNAMI DQ. We mixed as directed and applied it to the entire surface of our canal as well as the weeds themselves with 2 powered Backpack Sprayers. The results were astonishing! Within 24 hours of application, Lilly Pads, Maidencane and other weeds were already brown on exposed parts. Within 5 days, 80% of the weeds, even the tough ones, were brown and dead. Today, we are putting one last coat on the entire canal, wait a week, then drop muck tablets all over the bottom because it's definitely going to need them. This is, by far, the most effective product of its type we have ever used. I don't say this lightly. We have tried just about everything over the years and nothing else that we have tried compares. HIGHLY RECOMMEND THIS PRODUCT ☆☆☆☆☆ 5 Stars!!!

### ⭐⭐⭐⭐⭐ Chemicals are brand name and arrived intact.
*by H***S on November 2, 2025*

The material was well packaged with each jug in a heavy plastic bag. The cardboard box was torn and the tape was coming loose. But everything was protected and sealed and ready for use. The chemicals are the brand name and excellent.

### ⭐⭐⭐⭐⭐ Keeps duck weed in check
*by D***R on November 8, 2025*

Works on duck weed and other unwanted aquatic growth.

## Frequently Bought Together

- Tsunami DQ Aquatic Herbicide - Gallon - 37.3 Percent Diquat Dibromide - Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More
- Plex Mate Aquatic Surfactant for Herbicides – Quart- Non-Ionic, Increase Product Coverage, Increase Product Penetration, Increase Product Effectiveness
- CattPlex Pro - Aquatic Herbicide - Kills Cattails, Water Lilies, Grasses & More - Quart (32 Ounces)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.za/products/16221137-tsunami-dq-aquatic-herbicide-gallon-37-3-percent-diquat-dibromide](https://www.desertcart.co.za/products/16221137-tsunami-dq-aquatic-herbicide-gallon-37-3-percent-diquat-dibromide)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-07*