--- product_id: 56099049 title: "Eco Pond Fish Pond Duckweed Control 500ml" brand: "eco pond" price: "¥9292" currency: JPY in_stock: true reviews_count: 8 category: "Eco Pond" url: https://www.desertcart.jp/products/56099049-eco-pond-fish-pond-duckweed-control-500ml store_origin: JP region: Japan --- # Eco-friendly natural bacteria Treats up to 4500L water Prevents duckweed spread Eco Pond Fish Pond Duckweed Control 500ml **Brand:** eco pond **Price:** ¥9292 **Availability:** ✅ In Stock ## Summary > 🌿 Keep your pond pristine and green—naturally unstoppable! ## Quick Answers - **What is this?** Eco Pond Fish Pond Duckweed Control 500ml by eco pond - **How much does it cost?** ¥9292 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/56099049-eco-pond-fish-pond-duckweed-control-500ml) ## Best For - eco pond enthusiasts ## Why This Product - Trusted eco pond brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Term Control:** Stops duckweed from multiplying, reducing maintenance and keeping your pond pristine. - • **Broad Compatibility:** Safe for all pond types and freshwater fish, ensuring a balanced aquatic ecosystem. - • **Sustainable Pond Care:** Harnesses natural bacteria for eco-friendly duckweed control without harmful chemicals. - • **High Coverage Efficiency:** One 500ml bottle treats up to 4500 litres (1000 gallons) of pond water, maximizing value. - • **Simple & Safe Application:** Easy dosing with no risk of overdose—just mix and spread evenly for effective results. ## Overview Eco Pond Fish Pond Duckweed Control 500ml uses natural bacteria to safely and effectively prevent duckweed spread in ponds. Suitable for all pond types and freshwater fish, this eco-friendly liquid treats up to 4500 litres of water with simple dosing instructions and no risk of overdose, ensuring long-term pond clarity and health. ## Description Product Description Ecopond Duckweed Controls is a natural approach to controlling duckweed in ponds. It works by using natural bacteria to modify the water chemistry and creating conditions which prevent duckweed from spreading.Dosing Instructions:Intial dose of 25ml per 450 litres(100 gallons), adding to a watering can or bucket of pond water. Mix well and spread over the pond surface evenly.As a maintenance dose, add 10ml per 450 litres(100 gallons) weekly until duckweed stops growing.-Cannot be overdosed-500ml treats upto 4500 litres (1000gallons) Directions Initial dose of 25ml per 450 litres(100 gallons), add to a watering can or bucket of pond water, mix well and spread over the pond surface evenly. As a maintenance dose, add 10ml per 450 litres(100 gallons) weekly until duckweed stops growing. Review: Follow directions for success! - I have two ponds connected and they are BOTH CLEAR NOW having used the product. It DOES NOT KILL THE DUCKWEED it stops it from multiplying so as the individual weeds die off, they aren't replaced. It does work!! Review: So far so good but need to stay on top of things! - So far so good I’m about to reach week 4 and I have put a whole bottle of this chemical into my pond each week. Before doing so, I make a habit of using a net to remove as much duck weed as possible and clear the water surface of those little weeds using my leaf blower or my hose so that there’s as little duck weed remaining as possible. Generally 99% of the water surface stays free of weed in the week that follows. However, I also did some reading up as am doing other things to improve the health of the waters. I’ve installed a solar pump to inject some air into the water. Overall the look of the water seems to be improving. Not sure this will eradicate all the weed but it’s getting it to a much more manageable level. ## Features - Eco-friendly duckweed control - Safes for all types of pond - Cotrols the spread of duckweed - 500ml treats up to 4500 litres(1000 gallons) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00A4CJEC4 | | Best Sellers Rank | 48,029 in Garden ( See Top 100 in Garden ) 216 in Water Garden & Pond Treatment | | Brand | Eco Pond | | Brand Name | Eco Pond | | Customer Reviews | 3.5 out of 5 stars 218 Reviews | | Item Form | Liquid | | Item Weight | 600 Grams | | Item form | Liquid | | Item weight | 600 Grams | | Liquid Volume | 500 Millilitres | | Liquid volume | 500 Millilitres | | Manufacturer | Eco Pond | | Manufacturer Part Number | 50016 | | Model Number | 50016 | | Target Species | Freshwater Pond Fish | | Unit Count | 500 millilitre(s) | ## Product Details - **Brand:** Eco Pond - **Liquid volume:** 500 Millilitres - **Item weight:** 600 Grams - **Item form:** Liquid - **Manufacturer:** Eco Pond ## Images ![Eco Pond Fish Pond Duckweed Control 500ml - Image 1](https://m.media-amazon.com/images/I/519CGKzB7vL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Follow directions for success! *by M***L on 14 March 2020* I have two ponds connected and they are BOTH CLEAR NOW having used the product. It DOES NOT KILL THE DUCKWEED it stops it from multiplying so as the individual weeds die off, they aren't replaced. It does work!! ### ⭐⭐⭐⭐ So far so good but need to stay on top of things! *by A***D on 8 June 2025* So far so good I’m about to reach week 4 and I have put a whole bottle of this chemical into my pond each week. Before doing so, I make a habit of using a net to remove as much duck weed as possible and clear the water surface of those little weeds using my leaf blower or my hose so that there’s as little duck weed remaining as possible. Generally 99% of the water surface stays free of weed in the week that follows. However, I also did some reading up as am doing other things to improve the health of the waters. I’ve installed a solar pump to inject some air into the water. Overall the look of the water seems to be improving. Not sure this will eradicate all the weed but it’s getting it to a much more manageable level. ### ⭐ POINTLESS AND DOES NOT WORK *by O***N on 7 June 2023* Like many other reviewers, this just doesn't work. I thought initially it slowed the spread but frankly there is no evidence of that at all. It's a shame that despite several one star reviews, it still shows 3-4 stars. Stars to be weighted due to how recent they are. I ALSO BELIEVE IT DOES KILL POND LIFE SO BE WARY. --- ## 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.jp/products/56099049-eco-pond-fish-pond-duckweed-control-500ml](https://www.desertcart.jp/products/56099049-eco-pond-fish-pond-duckweed-control-500ml) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-08*