---
product_id: 6004172
title: "Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife"
brand: "sepro"
price: "€ 281.10"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.es/products/6004172-sonar-rtu-ready-to-use-aquatic-herbicide-1-quart-systemic
store_origin: ES
region: Spain
---

# Systemic Control for Duckweed & Submerged Weeds EPA Approved & Safe for Fish & Wildlife 1 Quart Ready-to-Use Liquid Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife

**Brand:** sepro
**Price:** € 281.10
**Availability:** ✅ In Stock

## Summary

> 🌊 Clear your pond, not your schedule!

## Quick Answers

- **What is this?** Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife by sepro
- **How much does it cost?** € 281.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/6004172-sonar-rtu-ready-to-use-aquatic-herbicide-1-quart-systemic)

## Best For

- sepro enthusiasts

## Why This Product

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

## Key Features

- • **Precision Dosing:** Easily treat up to ½ acre with just 4 quarts—simple, effective, and mess-free.
- • **Season-Long Control:** One treatment delivers lasting weed control for the entire season.
- • **Eco-Friendly Formula:** EPA approved and safe for fish, pets, and wildlife—pond care without compromise.
- • **Effortless Application:** No mixing, spraying, or boats needed—just pour and relax.
- • **Powerful Systemic Action:** Targets and eradicates stubborn aquatic weeds from root to tip.

## Overview

Sonar RTU is a ready-to-use, EPA-approved aquatic herbicide designed for easy, no-mess control of duckweed and submerged vegetation in ponds up to ½ acre. Safe for fish and wildlife, it delivers season-long systemic weed control without the need for mixing or special equipment.

## Description

desertcart.com : Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife : Patio, Lawn & Garden

Review: Easy to apply and works as advertized. - This product seems expensive at first, but it is worth the price in my opinion. It is concentrated and treats a great deal of water for its size. The real advantage is that it doesn't require and special application. No spaying with droplets of a particular size and no need to be in or on the water. You apply it right out of the container. I do walk the edge of the pond to spread it out a little, but the directions say you don’t even need to do that. It is so soluble it spreads throughout the pond on its own. And it works when applied in the correct quantity and on the right schedule per the application instructions. No more algae.
Review: Getting rid of submerged vegetation in a pond - Sensational product. I had submerged vegetation covering 95% of my pond. With such ease of adding to the pond within two weeks, 2/3 of the vegetarian was gone. One week later I had no more vegetation, and the water was so much cleaner.

## Features

- No Mixing, No Spray Equipment, or Boat needed
- The most simple DIY systemic herbicide you can buy, just pour in the right dose directly into the pond
- EPA Approved and Non-toxic for fish, pets, and wildlife, so it’s good for use in residential ponds, farms, and lakes
- Easy to dose just use 4 quarts per 1/2 acre (4-6ft depth avg)
- Due to compliance with state regulations, shipments to AK, CT, HI, ME, NJ, NY, WA, and Canada are not permitted. Orders from these states will be voided

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004XWS5DU |
| Best Sellers Rank | #57,008 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #220 in Weed Killers |
| Brand | SePRO |
| Customer Reviews | 4.2 4.2 out of 5 stars (420) |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 2.17 pounds |
| Item model number | SonRTU |
| Liquid Volume | 1 Quarts |
| Manufacturer | SePRO Corporation |
| Product Dimensions | 2.5 x 4.4 x 10.1 inches |
| UPC | 811055010933 |
| Unit Count | 32.0 Fluid Ounces |

## Product Details

- **Brand:** SePRO
- **Item Form:** Liquid
- **Item Weight:** 2.17 Pounds
- **Liquid Volume:** 1 Quarts
- **UPC:** 811055010933

## Images

![Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife - Image 1](https://m.media-amazon.com/images/I/41K0XOm73wL.jpg)
![Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife - Image 2](https://m.media-amazon.com/images/I/41rtqAdONVL.jpg)
![Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife - Image 3](https://m.media-amazon.com/images/I/51cDZJVokWL.jpg)
![Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife - Image 4](https://m.media-amazon.com/images/I/51duThMG1RL.jpg)
![Sonar RTU (Ready-to-Use) Aquatic Herbicide 1 Quart, Systemic Weed Control for Duckweed and More - No Mixing or Equipment Needed - EPA Approved, Season-Long Treatment, Safe for Fish & Wildlife - Image 5](https://m.media-amazon.com/images/I/61XadXFMURL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to apply and works as advertized.
*by R***Y on August 7, 2025*

This product seems expensive at first, but it is worth the price in my opinion. It is concentrated and treats a great deal of water for its size. The real advantage is that it doesn't require and special application. No spaying with droplets of a particular size and no need to be in or on the water. You apply it right out of the container. I do walk the edge of the pond to spread it out a little, but the directions say you don’t even need to do that. It is so soluble it spreads throughout the pond on its own. And it works when applied in the correct quantity and on the right schedule per the application instructions. No more algae.

### ⭐⭐⭐⭐⭐ Getting rid of submerged vegetation in a pond
*by S***A on June 26, 2025*

Sensational product. I had submerged vegetation covering 95% of my pond. With such ease of adding to the pond within two weeks, 2/3 of the vegetarian was gone. One week later I had no more vegetation, and the water was so much cleaner.

### ⭐⭐⭐⭐⭐ Works on small pond
*by G***G on July 20, 2024*

I have a small backyard koi pond of approx. 800 gallons that got duckweed a couple of years ago from some plants I had ordered on eBay. This product is expensive but I hadn’t found a better option, so I bought a bottle and did the math to determine that I needed to add a whopping 3 ml. I double checked my work and got the same answer. So I used a syringe that had come with an inkjet refill kit, shook the bottle, sucked 3 ml out, and squirted it into the pond. It remained kind of congealed so I did mix it into the water. A week later and the duckweed turned light in color and started to die off. I skimmed most of it off and it’s obvious that it is no longer spreading. I’ll reapply in a couple of weeks per the directions but I stand amazed that 3 ml was this effective. It does not appear to be affecting my 3 koi at all.

## Frequently Bought Together

- Sonar RTU (Ready-to-Use) Aquatic Herbicide - 1 Quart Systemic Herbicide for Duckweed, Hydrilla and Most Difficult Aquatic Weeds, No Equipment Needed, Simply Pour in for Season Long Control
- Aquashade 1-Gallon Pond Treatment – EPA-Approved Blue Dye for Weed & Algae Suppression | Eco-Friendly, Non-Toxic, and Safe for Aquatic Life, Livestock, and Wildlife
- Cutrine-Plus Liquid Algaecide - 1 Gallon Professional-Grade Algae Killer for Lakes & Ponds, EPA Approved to Control All Types of Algae (Planktonic, Filamentous, and Chara)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-23*