--- product_id: 25642510 title: "Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon" brand: "airmax" price: "$132.64" currency: USD in_stock: false reviews_count: 8 url: https://www.desertcart.us/products/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-1 store_origin: US region: United States of America --- # Weeds brown & die in 7-10 days Controls submerged, floating & emergent weeds 32 fl oz treats 5,000 sq ft Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon **Brand:** airmax **Price:** $132.64 **Availability:** ❌ Out of Stock ## Summary > 🌊 Clear your pond, clear your mind—weed-free waters await! ## Quick Answers - **What is this?** Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon by airmax - **How much does it cost?** $132.64 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-1) ## 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 - • **Massive Coverage:** One 32 fl oz bottle treats up to 5,000 sq ft—efficient pond care without constant reapplication. - • **Fast-Acting Formula:** Visible weed browning and die-off within just 7-10 days—speed your pond’s transformation. - • **Safe for Fish & Wildlife:** Formulated to protect koi, goldfish, birds, and livestock when used as directed—eco-conscious pond management. - • **Easy Application with Booster:** Use with Airmax Treatment Booster Plus for enhanced penetration and maximum herbicide effectiveness. - • **Broad Spectrum Aquatic Control:** Targets overgrowth, invasive & nuisance pond weeds for pristine water clarity. ## Overview Airmax Ultra PondWeed Defense is a fast-acting liquid herbicide designed for broad-spectrum control of submerged, floating, and emergent pond weeds. Treating up to 5,000 sq ft per 32 fl oz bottle, it visibly browns and kills weeds within 7-10 days, improving water quality and reducing nutrient buildup. Safe for fish and wildlife when used as directed, it’s ideal for residential, commercial, and farm ponds. For best results, pair with Airmax Treatment Booster Plus to enhance herbicide penetration and efficacy. ## Description desertcart.com : Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon | Easy spray application liquid treatment control concentrate to clean & clear large pond & lake water; fish, pet & animal safe : Algaecide Water Treatments : Patio, Lawn & Garden Review: Kiils watermeal and duckweed very well. - I use this on a IWLA pond that I help manage. It is the only thing I have found that can keep watermeal and duckweed in check. I mix it according to the directions and spray every three weeks and it really works. Review: Great Product - We purchased this with the treatment booster plus. We used it as directed for weeds that were in our pond mainly below the water. It worked very well. Before using the product there were many weeds visible at the surface of the water. After about a few days there were no visible weeds at the surface where we sprayed. We treated our pond a few times (with a week in between applications as directed). We used a pond rake to get the dead weeds out (ones that we could). It also worked well for above the surface weeds. ## 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 Aquatic Life -- 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 | #235,693 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #740 in Weed Killers | | Brand | Airmax | | Brand Name | Airmax | | Coverage | 5000 square feet | | Customer Reviews | 4.3 out of 5 stars 144 Reviews | | Included Components | Ultra PondWeed Defense | | Item Form | Liquid | | Item Weight | 12 pounds | | Liquid Volume | 1 gallons | | Manufacturer | Airmax | | Model Number | 530154 | | Part Number | 530154 | | UPC | 811262014328 | | Unit Count | 128 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, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/41d0vAqDnRL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon - Image 2](https://m.media-amazon.com/images/I/81NYBDMQXEL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon - Image 3](https://m.media-amazon.com/images/I/71MmtZqEEBL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon - Image 4](https://m.media-amazon.com/images/I/917JKZonoSL.jpg) ![Airmax Ultra Pondweed Defense Aquatic Weed & Plant Killer, 1 Gallon - Image 5](https://m.media-amazon.com/images/I/91po1w0BnpL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Kiils watermeal and duckweed very well. *by D***W on July 29, 2025* I use this on a IWLA pond that I help manage. It is the only thing I have found that can keep watermeal and duckweed in check. I mix it according to the directions and spray every three weeks and it really works. ### ⭐⭐⭐⭐⭐ Great Product *by J***N on August 17, 2023* We purchased this with the treatment booster plus. We used it as directed for weeds that were in our pond mainly below the water. It worked very well. Before using the product there were many weeds visible at the surface of the water. After about a few days there were no visible weeds at the surface where we sprayed. We treated our pond a few times (with a week in between applications as directed). We used a pond rake to get the dead weeds out (ones that we could). It also worked well for above the surface weeds. ### ⭐⭐⭐⭐⭐ Good prod6 *by B***. on June 5, 2025* Works great. Fairly priced. ## 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-1](https://www.desertcart.us/products/25642510-airmax-ultra-pondweed-defense-aquatic-weed-and-plant-killer-1) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-22*