---
product_id: 472415247
title: "KnockDown Defense"
brand: "airmax"
price: "EC$602"
currency: XCD
in_stock: true
category: "Airmax"
url: https://grenada.desertcart.com/products/472415247-knockdown-defense
store_origin: GD
region: Grenada
---

# Fast 3-5 day action Targets 7+ invasive aquatic plants 16 fl oz easy liquid formula KnockDown Defense

**Brand:** airmax
**Price:** EC$602
**Availability:** ✅ In Stock

## Summary

> 🌊 KnockDown Defense: Because your pond deserves a glow-up!

## Quick Answers

- **What is this?** KnockDown Defense by airmax
- **How much does it cost?** EC$602 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [grenada.desertcart.com](https://grenada.desertcart.com/products/472415247-knockdown-defense)

## Best For

- airmax enthusiasts

## Why This Product

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

## Key Features

- • **Dual-Action Power:** Simultaneously eliminates algae and invasive weeds for total pond health.
- • **Rapid Restoration:** Clears ponds & lakes in just 3-5 days—no more waiting around.
- • **Eco-Smart Application:** Designed for ponds, lakes, and slow-moving waters with safe, targeted treatment.
- • **Broad Spectrum Defense:** Effective against floating algae, hydrilla, fanwort, and more—your pond’s ultimate shield.
- • **Precision Liquid Control:** Easy-to-measure 16 fl oz liquid formula for hassle-free application.

## Overview

Airmax Knockdown Defense is a fast-acting, 16 fl oz liquid treatment that controls a wide range of invasive aquatic weeds and algae in ponds, lakes, and slow-moving waters. It delivers visible results within 3-5 days, combining powerful dual-action herbicide and algaecide properties for long-lasting pond clarity and health.

## Description

desertcart.com : Airmax Knockdown Defense 2-in-1 Pond Algae & Weed Control, 16 fl oz | Fast-acting algaecide and aquatic weed treatment helps clear ponds and lakes with an easy-to-use liquid formula : Patio, Lawn & Garden

## Features

- Powerful formula: KnockDown Defense eliminates a variety of invasive weeds and algae including: floating algae, watermeal, duckweed, watermilfoil, fanwort, hydrilla, and more. KnockDown Defense is effective in ponds, lakes, and slow moving or inactive water such as canals.
- Fast results: Whether you’re dealing with floating algae or submerged aquatic plants, KnockDown works fast to eliminate algae and weeds to restore your pond or lake in 3-5 days.
- Liquid formulation: KnockDown Defense is a liquid algae control and aquatic herbicide that is easy to measure, mix, and apply. For best results, apply aquatic weed control treatment with a surfactant and a tank sprayer.
- Innovative solution: KnockDown Defense is a fast-acting and long-lasting combination treatment for both algae and pond weed control. Developed to be effective on even the toughest invasive lake weeds and algae.
- For ponds & lakes: KnockDown Defense provides fast-acting, long-lasting pond weed control. Use 0.75-1.5 fluid ounces of KnockDown Defense for every 1/8 acre or roughly 5,500 sq/ft. Use as directed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B3Y5Z1S8 |
| ASIN  | B0B3Y5Z1S8 |
| Best Sellers Rank | #19,959 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #52 in Water Garden & Pond Treatment |
| Brand Name | Airmax |
| Customer Reviews | 4.6 4.6 out of 5 stars (78) |
| Date First Available  | June 13, 2022 |
| Item Form | Liquid |
| Item Highlight | Fast-acting algaecide and aquatic weed treatment helps clear ponds and lakes with an easy-to-use liquid formula |
| Item Weight | 0.65 kg |
| Liquid Volume | 16 fluid ounces |
| Manufacturer | Airmax, Inc. |
| Manufacturer  | Airmax, Inc. |
| Manufacturer Part Number | 530268 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Amphibian, Fish, Reptile |
| Product Dimensions  | 5 x 2 x 9 inches; 1.43 pounds |
| Target Species | Aquatic Plants |
| UPC | 810089840295 |
| Unit Count | 16 Fluid Ounces |

## Product Details

- **Brand:** Airmax
- **Item Form:** Liquid
- **Item Weight:** 0.65 kg
- **Liquid Volume:** 16 fluid ounces
- **Number of Packs:** 1

## Images

![KnockDown Defense - Image 1](https://m.media-amazon.com/images/I/51OUdezWiuL.jpg)

## Available Options

This product comes in different **Color, Size** options.

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**Shop now:** [https://grenada.desertcart.com/products/472415247-knockdown-defense](https://grenada.desertcart.com/products/472415247-knockdown-defense)

---

*Product available on Desertcart Grenada*
*Store origin: GD*
*Last updated: 2026-10-22*