--- product_id: 25642510 title: "Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon" brand: "airmax" price: "$419.02" currency: USD in_stock: true reviews_count: 8 category: "Airmax" url: https://www.desertcart.us/products/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-easy store_origin: US region: United States of America --- # Fast-Acting Formula Broad Spectrum Control Fish Safe Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon **Brand:** airmax **Price:** $419.02 **Availability:** ✅ In Stock ## Summary > 🌿 Clear Waters, Happy Fish! ## Quick Answers - **What is this?** Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon by airmax - **How much does it cost?** $419.02 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/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-easy) ## 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 - • **Rapid Results:** Witness visible changes in just 7-10 days—nature's speed at your fingertips! - • **Covers Large Areas:** One gallon treats up to 5,000 sq ft—perfect for expansive lakes and ponds. - • **Transform Your Water:** Say goodbye to pesky weeds and hello to crystal-clear ponds! - • **Quick & Easy Application:** Spray on and watch the magic happen—no complicated setup! - • **Safe for All Aquatic Life:** Enjoy peace of mind knowing your fish and pets are protected. ## Overview The Airmax Ultra Pondweed Defense is a powerful aquatic herbicide designed to effectively control a variety of submerged, floating, and emergent weeds in large bodies of water. Safe for fish and pets, this fast-acting formula begins to show results within a week, making it an essential tool for maintaining a healthy aquatic environment. ## Description Airmax - Pond & Lake Managment With over 25 years of industry experience and proven results in the field, Airmax is the most trusted name among pond and lake owners. Airmax, Inc., is the industry leader in pond and lake management, producing unrivaled fountain and diffused aeration systems and natural water treatments. We are an American company built from a passion for improving how pond owners care for their ponds. Airmax has developed and engineered several solutions ranging from powerful, quiet, efficient aeration systems to natural water treatments and conditioners for ponds, lakes, and water gardens. Airmax, Inc., is the industry leader in pond and lake management, producing unrivaled fountain and diffused aeration systems and natural water treatments. We are an American company built from a passion for improving how pond owners care for their ponds. Airmax has developed and engineered several solutions ranging from powerful, quiet, efficient aeration systems to natural water treatments and conditioners for ponds, lakes, and water gardens. Solutions for Ponds & Lakes Visit the Store Solutions for Ponds & Lakes Visit the Store Review: Best product to kill pond weeds and etc - most durable application that I found on the market that is also budget friendly. The portion that it takes to work is very reasonable. Within 24-28 hours of using, you'll start to see the weeds wilting and dying. This product keeps my pond looking very nice and weed-free !! Review: Worked great! - Bought for our pond it is working. ## Features - Broad Spectrum Pondweed Control -- Herbicide works on submerged, floating, and emergent weeds. Controls watermilfoil, hydrilla, naiad, coontail, American pondweed, and other common aquatic weeds. - Controls Submerged & Floating Pond Weeds -- Apply good coverage to nuisance or invasive weeds that are actively growing. Herbicide may temporarily control duckweed and watermeal in slow-moving water. - Fast-Acting Contact Aquatic Herbicide -- Easy to apply using a tank sprayer. For best results, use with surfactant Airmax Treatment Booster Plus and control pond and lake weeds all season. - Quick Results -- Weeds will begin to brown and die within 7-10 days. Remove dead weeds. Early-season emergent treatments may require additional applications. 32 fl oz treats up to 5,000 sq ft. - Will Not Harm Fish -- When used as directed, will not harm game fish such as bass, trout, bluegill, carp, bass, catfish, walleye, crappie, pike, salmon, or perch. Safe for koi and goldfish. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C0DYTM0 | | Active Ingredients | Herbicide | | Best Sellers Rank | #34,143 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #237 in Weed Killers | | Brand | Airmax | | Brand Name | Airmax | | Coverage | 20000 square_feet | | Customer Reviews | 4.3 out of 5 stars 405 Reviews | | Included Components | Ultra PondWeed Defense | | Item Form | Liquid | | Item Weight | 10.5 Pounds | | Liquid Volume | 1 Gallons | | Manufacturer | Airmax, Inc. | | Model Number | 530154 | | Part Number | 530154 | | UPC | 811262014328 | | Unit Count | 128.0 Fluid Ounces | ## Product Details - **Brand:** Airmax - **Item Weight:** 10.5 Pounds - **Liquid Volume:** 1 Gallons - **Item Form:** Liquid - **Active Ingredients:** Herbicide ## Images ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/41d0vAqDnRL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon - Image 2](https://m.media-amazon.com/images/I/81NYBDMQXEL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon - Image 3](https://m.media-amazon.com/images/I/71MmtZqEEBL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon - Image 4](https://m.media-amazon.com/images/I/917JKZonoSL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon - Image 5](https://m.media-amazon.com/images/I/91po1w0BnpL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best product to kill pond weeds and etc *by J***N on March 10, 2026* most durable application that I found on the market that is also budget friendly. The portion that it takes to work is very reasonable. Within 24-28 hours of using, you'll start to see the weeds wilting and dying. This product keeps my pond looking very nice and weed-free !! ### ⭐⭐⭐⭐⭐ Worked great! *by C***S on March 10, 2026* Bought for our pond it is working. ### ⭐⭐⭐⭐ Quick *by B***L on September 10, 2025* Killed fast. Had to call for mixing. FYI 22 oz per 2 gallons. Pricy but worked on cattails ## Frequently Bought Together - Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, Easy Spray Application to Clean & Clear Large Pond & Lake Water, Liquid Treatment Control Concentrate, Fish, Pet & Animal Safe, 1 Gallon - Airmax MuckAway, Natural Pond Muck Remover, Cleans & Clears Away Muck & Sludge, Easy to Use Bacteria & Enzyme Tablets, Safe for The Environment, Treats 1,500 Sq Ft, 6 Month Supply, 16 Scoops, 8 lbs --- ## 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.us/products/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-easy](https://www.desertcart.us/products/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-easy) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-21*