--- product_id: 48702024 title: "API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container" brand: "api" price: "13826 kr" currency: ISK in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.is/products/48702024-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-454g store_origin: IS region: Iceland --- # Bi-weekly maintenance dosing Barley-based sludge digestion Natural active bacteria API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container **Brand:** api **Price:** 13826 kr **Availability:** ✅ In Stock ## Summary > 🌊 Transform your pond into a pristine oasis with nature’s own sludge destroyer! ## Quick Answers - **What is this?** API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container by api - **How much does it cost?** 13826 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/48702024-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-454g) ## 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:** Designed for easy integration into your pond’s seasonal routine—start-up, maintenance, and end-of-season cleanup. - • **Trusted Legacy Brand:** From API, with 50+ years of aquatic care expertise ensuring proven, effective results. - • **Low-Maintenance Luxury:** Reduces pond upkeep time by digesting dead algae, leaves, and grass clippings naturally. - • **Eco-Powered Pond Clarity:** Harnesses natural bacteria and barley to break down sludge and fish waste, keeping your pond crystal clear. - • **Fish & Plant Friendly Formula:** Safe for freshwater pond fish and plants, promoting a balanced aquatic ecosystem. ## Overview API Pond-Zyme Sludge Destroyer is a 454g natural pond treatment that uses active bacteria and barley to break down fish waste, algae, and organic sludge. Ideal for ornamental ponds, it supports seasonal pond health with bi-weekly dosing, reducing maintenance while promoting clear, healthy water for fish and plants. Trusted by pond enthusiasts for over 50 years, it’s a professional-grade solution for sustainable pond care. ## 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: Cleared my pond up very well after only 4 applications - Bought this for my new wildlife pond. Really cleared up the sludge that had built up of its first summer. Water is crystal clear and does not smell of stagnation anymore. Highly recommend. ## Features - Contains one (1) API POND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1-Pound 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, end of season, then once every two weeks for regular maintenance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000OVCI2S | | Allergen Information | Apple Free | | Best Sellers Rank | 12,799 in Garden ( See Top 100 in Garden ) 94 in Water Garden & Pond Treatment 1,350 in Pools, Hot Tubs & Supplies | | Brand | API | | Brand Name | API | | Customer Reviews | 4.2 out of 5 stars 4,814 Reviews | | Global Trade Identification Number | 00317163021460 | | Included Components | Contains natural active ingredients to break down fish waste and consume pond sludge | | Item Form | Stick | | Item Type Name | Pond Sludge Remover | | Item Weight | 1 Pounds | | Item form | Stick | | Item weight | 1 Pounds | | Manufacturer | Mars Fishcare | | Manufacturer Part Number | 146B | | Model Number | 146B | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Freshwater Pond Fish | | UPC | 885730609644 885479943481 317163421468 885509235029 317163021460 885232340557 885390880940 | | Unit Count | 1 count | | Unit count | 1 count | ## Product Details - **Brand:** API - **Item form:** Stick - **Item weight:** 454 g - **Number of Packs:** 1 - **Unit count:** 1 count ## Images ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container - Image 1](https://m.media-amazon.com/images/I/81P3wccS3hL.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container - Image 2](https://m.media-amazon.com/images/I/91QVOW8ZmTL.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container - Image 3](https://m.media-amazon.com/images/I/A17vjkQ9+9L.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container - Image 4](https://m.media-amazon.com/images/I/A1DN2LBEZTL.jpg) ![API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container - Image 5](https://m.media-amazon.com/images/I/710PtBqXxxL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: how many gallons does this treat** A: The container comes with a soup about tablespoon sized and there is messing table on the container of how many scoops per 100 gallons. I have been using it once a week with 2 scoops and there's about 6 months worth in the container, by my guess. I hope this helps! **Q: What are the ingredients? Does this contain peroxide?** A: No peroxide **Q: Hi my water is clear. But will this work for cleaning up a sludge spot in my pond that is about 4X4? Or should I go with a pellet sludge remover?** A: This product is excellent I use it with either API pond flush or Microbelift PL. A super self discovered secret is mix 2 parts liquid bacteria above with one part pond zyme to make a cookie dough consistency. Roll it into a ball and drop or toss into pond directly into dirtiest sludge spots in the bottom of your pond. We use this technique in show ponds at a pond outfitter. Tried and true for over the last year. Unplug this UV’s for at least a day. You can substitute half barley extract if you’re having an issue with string algae. I then supplement with whatever remaining liquid you need to add for the size of your pond. **Q: I have a 600g pond. I dosed it last night. Water is still black. How long does this take to clear water?** A: I was not a fan of this products performance. I've not had Black problems before, but lots of Green especially in Spring. I think water changes and UV Sterilization unit was my clear water help! ## 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 ### ⭐⭐⭐⭐⭐ Cleared my pond up very well after only 4 applications *by M***D on 7 October 2025* Bought this for my new wildlife pond. Really cleared up the sludge that had built up of its first summer. Water is crystal clear and does not smell of stagnation anymore. Highly recommend. ### ⭐⭐⭐⭐ 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. ## Frequently Bought Together - API POND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1-Pound Container - API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G) - API POND ACCU-CLEAR Pond Water Clarifier 32-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.is/products/48702024-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-454g](https://www.desertcart.is/products/48702024-api-pond-zyme-sludge-destroyer-with-barley-for-ponds-454g) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-07-23*