--- product_id: 383865843 title: "Kolar Labs GFO HC - High Capacity Bayoxide E33HC Phosphate Remover - for Fish Tanks Aquariums & Ponds Multiple Sizes" brand: "kolar labs" price: "R5259" currency: ZAR in_stock: true reviews_count: 5 category: "Kolar Labs" url: https://www.desertcart.co.za/products/383865843-kolar-labs-gfo-hc-high-capacity-bayoxide-e33hc-phosphate-remover store_origin: ZA region: South Africa --- # works in salt & freshwater 4x phosphate removal capacity German-engineered purity Kolar Labs GFO HC - High Capacity Bayoxide E33HC Phosphate Remover - for Fish Tanks Aquariums & Ponds Multiple Sizes **Brand:** kolar labs **Price:** R5259 **Availability:** βœ… In Stock ## Summary > 🌟 Elevate your aquarium’s clarity with next-level phosphate removal! ## Quick Answers - **What is this?** Kolar Labs GFO HC - High Capacity Bayoxide E33HC Phosphate Remover - for Fish Tanks Aquariums & Ponds Multiple Sizes by kolar labs - **How much does it cost?** R5259 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/383865843-kolar-labs-gfo-hc-high-capacity-bayoxide-e33hc-phosphate-remover) ## Best For - kolar labs enthusiasts ## Why This Product - Trusted kolar labs brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Stable & Efficient Media:** Dense granules reduce channeling and fines, ensuring longer-lasting filtration efficiency. - β€’ **Premium German Engineering:** Manufactured by Lanxess to strict drinking water purity and performance standards. - β€’ **Easy Integration & Maintenance:** Works seamlessly in reactors, filter socks, canisters; quick rinse pre-use for optimal results. - β€’ **Versatile Aquatic Compatibility:** Perfect for reef tanks, marine & freshwater aquariums, ponds, and even natural swimming pools. - β€’ **Ultra-Powerful Phosphate Control:** Removes up to 4x more phosphate than standard GFO for crystal-clear water. ## Overview Kolar Labs GFO HC is a high-capacity granular ferric oxide phosphate remover engineered in Germany by Lanxess. It delivers 4x the phosphate removal efficiency, maintaining ultra-clear water and healthy aquatic life in saltwater and freshwater environments. Ideal for high-end reef tanks, ponds, and even natural swimming pools, this premium filtration media ensures stable, long-lasting performance with easy integration into various filtration systems. ## Description In aquariums, the water’s phosphate level plays an important role. Excessive phosphate causes cloudy water and poor fish health in freshwater and saltwater aquariums and serious harm to corals in saltwater reef aquariums.Our high-capacity GFO(granular ferric oxide) has nearly four times the phosphate removal capacity by volume in saltwater as other phosphate removers. It is denser, so it fluidizes well in a reactor with reduced channeling and is more mechanically stable for fewer fines after rinsing. Even when severely stressed, with GFO HC, the water remains clear and does not discolor during treatment.In addition to phosphate, GFO HC also removes silica. It strongly and effectively binds both phosphate and silica for lasting removal from your aquarium.Start with a standard dose of 1 gram/gallon and add or change media when phosphate levels start to rise or algae increases. For best results, do not allow phosphate levels to test above 0.05ppm.GFO HC can also be used as a swimming pool additive to manage phosphates by addition to swimming pool filters. It is a non-toxic alternative to other phosphate management approaches. It works in natural swimming pools as well!Bayoxide E33HC GFO is made by the same trusted German manufacturer, Lanxess, that has been making Bayoxide E33HC GFO products for the aquarium industry to rigorous quality, performance, and drinking water purity standards for years. Bayoxide is a registered trademark of LANXESS GmbHGet to Know Kolar LabsKolar Labs has been the source for premium filter media in the aquarium industry for years. We provide top of the line filtration medias and components made by leading manufacturers for hobbyists as well as large public aquariums.We are the Sole Distributor for Lanxess Bayoxide E33HC GFO, Lewatit DI Resins, Calgon Carbons, as well as other premium filtration supplies. Review: Great Product Review: I was using the regular GFO from this brand and from an aquarium website. My phosphate was only going down to about .35 and then would creep up. I started using this one and finally my phosphates are .05! My reef tank has never had phosphates in check until now. ## Features - HIGH QUALITY: High-capacity, ultra-pure virgin GFO HC removes 4x the phosphate in water - CLEANER AND HEALTHIER AQUARIUMS: Reduces phosphates to help keep aquariums clean and clear, and aquatic life healthy - BEST FOR HIGH-END AQUARIUMS: Best used in reefs and high-end marine fish tanks; Works in saltwater and freshwater aquariums, reef tanks, ponds, swimming pools and more - USE INSTRUCTIONS:Works great in reactors, filters socks, canister filters, and filter cartridges. Give a quick rinse to remove any dust from shipping prior to use - MANUFACTURED BY LANXESS: Made in Germany to rigorous quality, performance, and drinking water purity standards for years ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06WVHL4W3 | | Brand Name | Kolar Labs | | Customer Reviews | 4.6 4.6 out of 5 stars (156) | | Item Form | Granules | | Item Weight | 700 Grams | | Manufacturer | Kolar Labs | | Target Species | Fish | | UPC | 851794007122 | | Unit Count | 946.35 Milliliters | ## Product Details - **Brand:** Kolar Labs - **Item form:** Granules - **Item weight:** 700 Grams - **Manufacturer:** Kolar Labs - **UPC:** 851794007122 ## Images ![Kolar Labs GFO HC - High Capacity Bayoxide E33HC Phosphate Remover - for Fish Tanks Aquariums & Ponds Multiple Sizes - Image 1](https://m.media-amazon.com/images/I/81Xw9VR3vcL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by L***S on 17 August 2025* Great Product ### ⭐⭐⭐⭐⭐ Review *by S***8 on 12 September 2024* I was using the regular GFO from this brand and from an aquarium website. My phosphate was only going down to about .35 and then would creep up. I started using this one and finally my phosphates are .05! My reef tank has never had phosphates in check until now. ### ⭐⭐⭐⭐⭐ Review *by D***O on 27 June 2020* Absolutely rocks at keeping phosphates down in my 1300 gallon reef system! Running a bunch of Tangs in a 120L x 48”W x 36”H with a 300 gallon sump. Absolutely recommend this product to anyone wanting to Reef hard! ## Frequently Bought Together - GFO HC - High Capacity Bayoxide E33HC Phosphate Remover - for Fish Tanks, Aquariums & Ponds, 700g (32oz Jar, 1.54lb), by Kolar Labs - Kolar Labs Crystal Cal Activated Carbon – 1 Gallon, Activated Charcoal for Aquariums and Fish Tanks - Aquatop Media Reactor - for 50-200 Gallon Tanks - Includes Adjustable Water Pump - Intake and Output Tubing Included - Versatile Reactor --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/383865843-kolar-labs-gfo-hc-high-capacity-bayoxide-e33hc-phosphate-remover](https://www.desertcart.co.za/products/383865843-kolar-labs-gfo-hc-high-capacity-bayoxide-e33hc-phosphate-remover) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-15*