--- product_id: 276240221 title: "GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 454g" brand: "kolar labs" price: "VT39800" currency: VUV in_stock: true reviews_count: 5 category: "Kolar Labs" url: https://www.desertcart.vu/products/276240221-gfo-bayoxide-e33-phosphate-remover-for-freshwater-and-saltwater-aquariums store_origin: VU region: Vanuatu --- # Safe for freshwater & saltwater aquariums Rapid phosphate removal performance Ultra-pure virgin Bayoxide E33 granules GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 454g **Brand:** kolar labs **Price:** VT39800 **Availability:** ✅ In Stock ## Summary > 🌟 Elevate Your Aquarium Game with Pro-Grade Phosphate Removal! ## Quick Answers - **What is this?** GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 454g by kolar labs - **How much does it cost?** VT39800 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/276240221-gfo-bayoxide-e33-phosphate-remover-for-freshwater-and-saltwater-aquariums) ## 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 - • **Fast-Acting Algae Defense:** Rapidly reduces phosphate levels to starve algae, keeping your aquarium pristine and your corals thriving. - • **Trusted German Engineering:** Manufactured by LANXESS to rigorous quality and drinking water purity standards for reliable, long-lasting performance. - • **Versatile & Easy Integration:** Works seamlessly in reactors, filter socks, canister filters, and cartridges—just rinse and add for instant results. - • **Universal Aquarium Compatibility:** Perfectly safe and effective in freshwater, saltwater, reef tanks, and ponds—one solution for all aquatic environments. - • **Premium Purity, Maximum Efficiency:** Ultra-pure Bayoxide E33 granules ensure superior phosphate absorption with minimal fines for crystal-clear water. ## Overview Kolar Labs GFO Bayoxide E33 is a premium granular ferric oxide phosphate remover designed for both freshwater and saltwater aquariums. Manufactured in Germany by LANXESS, it offers ultra-pure, high iron content media that rapidly and effectively reduces phosphate levels, preventing algae growth and promoting coral health. Compatible with various filtration systems, it ensures long-lasting water clarity and aquatic vitality. ## Description Product description In aquariums, the water’s phosphate level plays an important role. Excessive phosphate causes increased algae growth and poor fish health in freshwater and saltwater aquariums and serious harm to corals in saltwater reef aquariums. GFO Bayoxide E33 removes phosphates from aquarium water. Its large specific surface achieves rapid and long-lasting phosphate bonding, making GFO the perfect solution for phosphate removal. Compared to conventional adsorption medias, the high iron content of GFO Bayoxide E33 demonstrates significantly increased absorption capacity combined with faster removal performance for highly efficacious and long lasting phosphate reduction that results in a healthier 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. Bayoxide is a registered trademark of LANXESS GmbH.Get to Know Kolar Labs Kolar Labs has been the source for premium filter medias 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 E33 GFO, Lewatit DI Resins, Calgon Carbons, as well as other premium filtration supplies. We stand behind all our products and, as a result, have gained the trust of many large aquarium companies. Directions Start with a dose of 1 gram/gallon, add or change media when phosphate levels rise or algae increases; works in reactors, filters socks, canister filters, and filter cartridges; give a quick rinse prior to use. Review: I’ve tried several brands of GFO over the years, and Kolar Labs’ Bayoxide E33 is easily one of the most consistent. It’s clean right out of the jar — very little dust after a quick rinse — and it doesn’t clump or break down like some cheaper versions. I’m running it in a reactor on my 150-gallon reef tank, and it keeps my phosphate levels stable around 0.03–0.05 ppm. I noticed clearer water within a few days and no negative effect on corals. What I like most is how long it lasts before needing replacement — easily 6–8 weeks depending on bioload. Pro tip: rinse lightly with RO water before use, and use a slow tumble in your reactor to avoid grinding it down. If you’re serious about keeping algae under control and your colors crisp, this GFO is worth every penny. Review: I tested my saltwater phosphate. It was 0.06.. a week before installing this product. Tested this week. Phosphate is 0.03. I like where it's going now. ## Features - HIGH QUALITY: High-quality, ultra-pure virgin Bayoxide E33 granular ferric oxide (GFO) with reduced fines; Removes phosphates from water - FIGHTS ALGAE: Reduces and prevents algae by removing their phosphate food source - SAFE FOR ALL AQUARIUMS: Works in saltwater and freshwater aquariums, reef tanks, ponds 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 in Germany to rigorous quality, performance, and drinking water purity standards for years ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XB9WNS9 | | Brand Name | Kolar Labs | | Customer Reviews | 4.4 4.4 out of 5 stars (495) | | Item Form | Granules | | Item Weight | 1.1 Pounds | | Liquid Volume | 1 Gallons | | Manufacturer | Kolar Labs | | Manufacturer Part Number | 9884232 | | Model Number | 9884232 | | Target Species | Fish | | UPC | 851794007078 | ## Product Details - **Brand:** Kolar Labs - **Item form:** Granules - **Item weight:** 1.1 Pounds - **Liquid volume:** 1 Gallons - **Manufacturer:** Kolar Labs ## Images ![GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 454g - Image 1](https://m.media-amazon.com/images/I/61IvWZ153qL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Where should I put this in a Fluval evo 13.5 gal tank? And is it good to mix with activated carbon in a same bag?** A: Thank you for your question! The media works well inside a fine mesh bag, well rinsed, anywhere there is decent water flow (like where you would place a carbon bag). This media can be mixed with the activated carbon in the same bag however, the GFO stays active longer than the carbon so that would be the only drawback. Please let us know if you have any other questions, we are happy to help. **Q: It says it can be used in pools. Are there dosage recommendations on the package** A: It says 1 - 2 grams per gallon in a fine mesh bag. I use it in my 35 gallon saltwater tank but I'm not sure how much it would take in a pool.? The jar has 454 grams in it. **Q: Can this be used in a reactor?** A: Hello, thank you for your question. This product can be mixed in reactor with carbon or used by itself. Please let us know if you have any further questions! The Kolar Labs Team **Q: How do i use this?** A: It's a really small particle GFO so you'll need to use a "very fine" mesh bag. Use an 1/8 to 1/4 cup for 30-40 gals. Rinse it and place the bag pretty much anywhere in your sump's flow/return. It works wonders with phosphates! Replace it every 4 to 6 weeks. I've also mixed it with activated carbon, mix about 1 part GMO to 2-3 parts carbon. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***H on 6 October 2025* I’ve tried several brands of GFO over the years, and Kolar Labs’ Bayoxide E33 is easily one of the most consistent. It’s clean right out of the jar — very little dust after a quick rinse — and it doesn’t clump or break down like some cheaper versions. I’m running it in a reactor on my 150-gallon reef tank, and it keeps my phosphate levels stable around 0.03–0.05 ppm. I noticed clearer water within a few days and no negative effect on corals. What I like most is how long it lasts before needing replacement — easily 6–8 weeks depending on bioload. Pro tip: rinse lightly with RO water before use, and use a slow tumble in your reactor to avoid grinding it down. If you’re serious about keeping algae under control and your colors crisp, this GFO is worth every penny. ### ⭐⭐⭐⭐⭐ Review *by J***O on 21 August 2025* I tested my saltwater phosphate. It was 0.06.. a week before installing this product. Tested this week. Phosphate is 0.03. I like where it's going now. ### ⭐⭐⭐⭐ Review *by K***R on 20 August 2022* Water sorting application. ## Frequently Bought Together - Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health (454g) - Kolar Labs Crystal Cal Activated Carbon – Large Jar, Activated Charcoal for Aquariums and Fish Tanks - Aquatop Media Reactor, 95 GPH – Up-Flow Filtration for Water Treatment – 10-75 Gal – Adjustable Water Pump Included – Reliable Filtration System --- ## 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.vu/products/276240221-gfo-bayoxide-e33-phosphate-remover-for-freshwater-and-saltwater-aquariums](https://www.desertcart.vu/products/276240221-gfo-bayoxide-e33-phosphate-remover-for-freshwater-and-saltwater-aquariums) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-17*