---
product_id: 724828051
title: "Tsunami DQ Aquatic Herbicide- Quart - 37.3 Percent Diquat Dibromide – Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More"
brand: "crystal blue"
price: "€ 196.20"
currency: EUR
in_stock: true
reviews_count: 5
category: "Crystal Blue"
url: https://www.desertcart.gr/products/724828051-tsunami-dq-aquatic-herbicide-quart-37-3-percent-diquat-dibromide
store_origin: GR
region: Greece
---

# Fast-acting aquatic weed control Targets submerged & floating weeds 37.3% Diquat Dibromide Concentrate Tsunami DQ Aquatic Herbicide- Quart - 37.3 Percent Diquat Dibromide – Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More

**Brand:** crystal blue
**Price:** € 196.20
**Availability:** ✅ In Stock

## Summary

> 🌊 Clear your pond, clear your mind — Tsunami DQ makes waves in weed control!

## Quick Answers

- **What is this?** Tsunami DQ Aquatic Herbicide- Quart - 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?** € 196.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/724828051-tsunami-dq-aquatic-herbicide-quart-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 & Fish-Safe:** Protects your aquatic ecosystem while eradicating weeds
- • **Easy Mix & Spray Application:** Ready-to-mix concentrate designed for hassle-free targeted treatment
- • **Versatile Multi-Weed Control:** Effective on duckweed, pondweed, watermeal, and more
- • **Powerful 37.3% Diquat Formula:** Concentrated strength for rapid aquatic weed elimination
- • **Rapid Action, Visible Results:** Watch your pond clear up fast with this fast-acting herbicide

## Overview

Tsunami DQ Aquatic Herbicide is a concentrated 37.3% diquat dibromide formula designed for fast, effective control of a broad spectrum of aquatic weeds including duckweed, watermeal, and pondweed. Safe for fish and wildlife when used as directed, it offers an eco-friendly solution to maintain healthy lakes and ponds. Its ready-to-mix concentrate ensures easy application, delivering rapid visible results that keep your water bodies pristine and weed-free.

## Description

Our aquatic herbicides are effective in controlling multiple types of pond weeds. Identifying which type of weed you have will determine which of our pond weed treatments to use. Tsunami DQ is a non-selective herbicide for both submerged and floating pond weeds. Effective in controlling duckweed, water hyacinth, pondweed, slender leaf pond weed, coontail and other aquatic weeds. Tsunami DQ can be blended with other herbicides for many uses. Tsunami DQ is a diquat dibromide based herbicide.

Review: Stuff works and best price for it is desertcart. You have to reapply it im a month or two if thick moss on top but worth it cause it really works. Saved our pond from suffocation.
Review: it works amazing for top surface weeds. But it doesn’t kill the root. Reapplying will eventually kill the weeds

## 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 | B004KTILEO |
| Item model number | 137 |
| Manufacturer | Crystal Blue |
| Product Dimensions | 12.7 x 5.08 x 27.94 cm; 907.18 g |

## Product Details

- **Active Ingredients:** Herbicide
- **Brand:** Crystal Blue
- **Item form:** Liquid
- **Item weight:** 907 g
- **Liquid volume:** 32 Fluid Ounces

## Images

![Tsunami DQ Aquatic Herbicide- Quart - 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/81p0LbqpqsL.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

### ⭐⭐⭐⭐⭐ Review
*by E***N on 25 December 2025*

Stuff works and best price for it is Amazon. You have to reapply it im a month or two if thick moss on top but worth it cause it really works. Saved our pond from suffocation.

### ⭐⭐⭐⭐⭐ Review
*by M***E on 2 September 2025*

it works amazing for top surface weeds. But it doesn’t kill the root. Reapplying will eventually kill the weeds

### ⭐⭐⭐⭐⭐ Review
*by B***R on 22 August 2025*

This stuff is a little pricey, but you don't need much per batch so it will go a long way. I used it on dry ground. Works very well. The directions say to completely cover the target and that is what I did. Any plants not covered completely will still survive.

## Frequently Bought Together

- Tsunami DQ Aquatic Herbicide- Quart - 37.3 Percent Diquat Dibromide – Concentrated Aquatic Weed Killer for Lakes and Ponds - Duckweed, Watermeal, Curly Leaf, Pondweed & Many More
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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-08*