--- product_id: 65173649 title: "API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container" brand: "api" price: "€ 48.59" currency: EUR in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.nl/products/65173649-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-237 store_origin: NL region: Netherlands --- # Natural barley-based active ingredients 237 ml potent liquid formula Bi-weekly maintenance dosing API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container **Brand:** api **Price:** € 48.59 **Availability:** ✅ In Stock ## Summary > 🌊 Transform your pond into a pristine oasis—because your backyard deserves the best! ## Quick Answers - **What is this?** API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container by api - **How much does it cost?** € 48.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/65173649-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-237) ## Best For - api enthusiasts ## Why This Product - Trusted api brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seasonal Smart Care:** Tailored dosing schedule for startup, maintenance, and end-of-season pond health—effortless year-round care. - • **Algae & Sludge Slayer:** Effectively digests dead algae, leaves, and grass clippings to reduce pond maintenance time. - • **Fish & Plant Friendly:** Safe for aquatic life, promoting a balanced ecosystem that supports vibrant fish and lush plants. - • **Trusted Legacy Formula:** Backed by 50+ years of API expertise, delivering proven results for healthier, cleaner ponds. - • **Eco-Powered Pond Clarity:** Harnesses natural barley enzymes to break down sludge and organic waste, keeping your pond crystal clear. ## Overview API Pond-Zyme Sludge Destroyer is a 237 ml liquid treatment that uses natural barley enzymes to break down fish waste, algae, and organic sludge in ornamental ponds. Designed for bi-weekly use, it reduces maintenance by digesting debris safely and effectively, supporting a healthy aquatic environment for fish and plants. Trusted for over 50 years, this product helps maintain clear, balanced pond water year-round. ## Description From the manufacturer Why be proactive with water treatments? A natural pond has a constant supply of fresh water flowing into it, such as from a stream or spring. Water also flows out of a natural pond, taking fish waste and other toxins with it. This isn’t true for most garden ponds as they are closed systems. Garden ponds also tend to be much smaller than natural ponds, so they do not offer the amount of water per fish that you find in nature. For these reasons, water treatments are necessary to keep water conditions safe for both fish and plant life and for clearer water. Following specific steps each season allows you to create a backyard retreat you’ll enjoy all year long! For more information about what’s needed each season, check out more below. Spring Start Up - Get Your Pond Ready! Its pond startup time! Whether filling a new pond or re-establishing an existing pond, following some simple steps at startup will yield benefits you’ll enjoy all season long. The 3 key steps that must be taken are making your tap water safe, activating the natural pond cycle, and maintaining sparkling clean water to boost fish and plant health. Once the water temperature reaches above 10⁰C, you’ll also want to start feeding your fish again. It is important to take care of all of your plants in the spring with API AQUATIC PLANT MEDIA and API AQUATIC PLANT FOOD TABLETS as they will be the key to success in most ponds! Lastly, monitor the water conditions in your pond with the API POND MASTER TEST KIT, an easy and accurate way to test 4 key water parameters including pH, ammonia, nitrite, and phosphat Summer - Provide Regular Care And Enjoy Your Pond Summer is the time to sit back and enjoy all of your hard work! You’ll need to continue regular care for your pond that includes adding beneficial bacteria like API POND-ZYME and API POND ECOFIX. While everything looks great, you’ll want to closely monitor the water conditions so that you can protect the health of your pond including plants and fish. Algae grows in the presence of sunlight where there is excess nutrients in the pond water for the algae to feed on. API POND ALGAE CURE has been used for over 18 years to effectively control green water algae, string algae, and blanketweed without harming fish or plants. At this time it could be beneficial to do a partial water change, adding API POND STRESS COAT and API POND SALT and fertilizing your pond plants Autumn - Prepare For Winter Performing a few simple steps in the autumn will prepare your fish and plants for the long, cold winter ahead and lay the foundation for a healthy start in the spring. We recommend removing excess organic matter to reduce fish stress during the winter months. Use a net to remove as many leaves as possible. Routine addition of API POND ECOFIX or API POND-ZYME throughout the season promotes healthy water quality and reduces the amount of organic matter you need to remove at the end of the season. It is also important to perform a 25% water change, adding API POND STRESS COAT and API POND SALT to make the tap water safe and to replenish important electrolytes which aid fish during the stressful winter months. Winter – Keep Pond Water Circulating In cooler climates, when the water temperature drops, fish will naturally eat less than at warmer temperatures. Once the water temperature drops below 5⁰C, fish will stop eating and if they have been fed properly through the summer and autumn, they will have ample reserves to survive the rigours of winter. It is also important to ensure your pond has circulation to keep an open area on the ponds surface throughout the winter months to prevent the buildup of toxic gases which can accumulate from the decomposition of organic matter. Making A Better Underwater World At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For over 50 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. Review: Healthier water product - Have used this product all the time does seem to help in the Warmer months, to keep the pond water healthy Review: The product arrived labelled sludge remover but as we had ... - The product arrived labelled sludge remover but as we had had so much trouble even finding Pond zyme plus in Britain we decided to give it a go anyway. It has certainly made made a difference to the pond weed accumulating but I wish I knew whether this is the same stuff we used previously ie pond zyme plus. ## Features - Use biocides safely. Always read the label and product information before use. - Contains one (1) API POND-ZYME SLUDGE DESTROYER Pond Water Cleaner With Barley 237 ml Container - Contains natural active ingredients to break down fish waste and consume Pond sludge - Breaks down dead algae and digests leaves and grass clippings - Helps to reduce overall Pond maintenance and keep Pond clean - Use twice a week for two weeks in ornamental Ponds for start-up and end of season, then once every two weeks for regular maintenance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000YJ45S0 | | Allergen Information | Apple Free | | Best Sellers Rank | 5,505 in Garden ( See Top 100 in Garden ) 38 in Water Garden & Pond Treatment | | Brand | API | | Brand Name | API | | Customer Reviews | 4.2 out of 5 stars 4,793 Reviews | | Global Trade Identification Number | 00317163011461 | | Item Form | Liquid | | Item Type Name | Pond Sludge Remover | | Item Weight | 8 Ounces | | Item form | Liquid | | Item weight | 8 Ounces | | Manufacturer | API | | Manufacturer Part Number | 146 | | Model Number | 146 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 317163011461 | | Unit Count | 227.0 gram | | Unit count | 227.0 gram | ## Product Details - **Brand:** API - **Item form:** Liquid - **Item weight:** 10.2 Ounces - **Manufacturer:** API - **UPC:** 317163011461 ## Images ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container - Image 1](https://m.media-amazon.com/images/I/81ppCTuy9TL.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container - Image 2](https://m.media-amazon.com/images/I/91QVOW8ZmTL.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container - Image 3](https://m.media-amazon.com/images/I/A17vjkQ9+9L.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container - Image 4](https://m.media-amazon.com/images/I/A1DN2LBEZTL.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 237 ml Container - Image 5](https://m.media-amazon.com/images/I/710PtBqXxxL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can you use it now in the beginning of March when it's still cold, or do you have to wait for the weather to warm up?** A: Not sure as this is the first season I have used this product . However , I think their comment of using it upon start up may also refer to start up after winter . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Healthier water product *by G***. on 17 March 2026* Have used this product all the time does seem to help in the Warmer months, to keep the pond water healthy ### ⭐⭐⭐⭐ The product arrived labelled sludge remover but as we had ... *by J***T on 2 September 2014* The product arrived labelled sludge remover but as we had had so much trouble even finding Pond zyme plus in Britain we decided to give it a go anyway. It has certainly made made a difference to the pond weed accumulating but I wish I knew whether this is the same stuff we used previously ie pond zyme plus. ### ⭐⭐⭐⭐⭐ Great product that works *by T***Y on 1 November 2025* I have a small outdoor pond with frogs living in there. The water was dirty and smelly. I tried a few natural things without chemicals but nothing worked until I used this. Now after a couple of weeks I can see the bottom of the pond and the smell has gone. ## Frequently Bought Together - API POND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 8oz container (146) - API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G) - API POND ACCU-CLEAR Pond Water Clarifier 16-Ounce Bottle --- ## 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.nl/products/65173649-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-237](https://www.desertcart.nl/products/65173649-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-237) --- *Product available on Desertcart Netherlands* *Store origin: NL* *Last updated: 2026-07-07*