--- product_id: 53035078 title: "TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (1lb, 454g)" brand: "tl reefs" price: "279.60 DT" currency: TND in_stock: true reviews_count: 8 category: "Tl Reefs" url: https://www.desertcart.tn/products/53035078-tl-reefs-gfo-phosphate-remover-granular-ferric-oxide-for-saltwater store_origin: TN region: Tunisia --- # 1lb treats 50 gallons Fast-acting phosphate reduction Permanently bonds phosphate TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (1lb, 454g) **Brand:** tl reefs **Price:** 279.60 DT **Availability:** ✅ In Stock ## Summary > ⚡ Keep your reef pristine and phosphate-free—because your corals deserve the best! ## Quick Answers - **What is this?** TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (1lb, 454g) by tl reefs - **How much does it cost?** 279.60 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/53035078-tl-reefs-gfo-phosphate-remover-granular-ferric-oxide-for-saltwater) ## Best For - tl reefs enthusiasts ## Why This Product - Trusted tl reefs brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Integration 🧴:** Simply rinse and use ½ cup per 50 gallons; fits perfectly in fine mesh bags or media reactors. - • **Long-Lasting Power 💪:** One pound lasts up to 3 years in typical reef setups—efficiency meets convenience. - • **Affordable Reef Care 💸:** Top-tier phosphate removal without breaking the bank—trusted by thousands of reef pros. - • **Phosphate Lockdown ⚛️:** Permanently binds phosphates to keep your reef thriving without leaching back. - • **Rapid Clarity Boost ⏱️:** Experience fast and effective phosphate reduction for crystal-clear aquarium water. ## Overview TL Reefs GFO is a granular ferric oxide phosphate remover designed for saltwater aquariums. It permanently bonds phosphate, preventing leaching, and works quickly to reduce phosphate levels. One pound treats up to 50 gallons and can last nearly three years in typical reef systems when used properly. Ideal for use in fine mesh bags or media reactors, it offers an affordable, efficient solution for maintaining optimal water quality in mixed reef tanks. ## Description desertcart.com : TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (1lb, 454g) : Pet Supplies Review: works FAST to reduce phosphates - I prefer to not use socks because of the amphipods and copepods in my large mixed reef saltwater system, which is probably why a pound of this powdered GFO lasts me almost 3 years. I'm back for more, but like everything else in the aquarium hobby the price has gone up since I first got this. However, this powdered GFO is still among the most affordable options for reducing phosphates. They say 'rinse, rinse, rinse' but I'm lazy. Because I'm using a bag to hold my GFO plus filter sock to hold the GFO bag, I let the filter sock 'rinse' but I enclose a photo as some of you may not like that super fine powder that escapes the bag to be running around in the sock... but I figure even that fine powder is reducing phosphates so I'm not wasting the extra fine powder most probably rinse away and I find it is kept contained by the sock. Also, to the guy who complained about his fine bag - compare his photo of bag to my photo of bag. A fine mesh bag designed to hold powdered filter media is going to appear like solid thin fabric so that other guy was doomed just by his choice of bag. Don't just go with any bag that says it is fine - actually LOOK at the bag to ensure it looks like what you need for fine granules. You'll find many more uses for this grade of mesh, so that is what I keep around for my various aquariums needs. I have media reactor that I use cubes coated with GFO but that is a more expensive option than this powdered GFO. When the cubes exhaust their phosphate absorption and/or my reactor gets gunky, I usually am living life too busy and I have a mess on my hands I have to get under control asap so death doesn't keep rolling through my corals from too high phosphates. I like this option because it is easy and results are immediate. I use a very fine mesh bag and I just pour in this GFO. Then I put the mesh bag filled with GFO into one of my two filter socks (dual overflow system) that are in the first chamber of my sump. This forces more water thru the GFO in the fine mesh bag than if the fine mesh bag were just laying on the bottom of my sump or even if I tried stuffing the bag between sump section baffles, as water wants to take the path of least resistance which is going around my fine mesh bag stuffed with GFO. When my socks get dirty, I throw those in a bucket and collect a bunch before I deal with the sump dirty socks. I put new socks in place and just move the GFO from the dirty to clean sock, as the GFO is still in its fine mesh bag I tied shut. If you use socks or if you have a media reactor designed for powders, this powdered GFO is absolutely the easiest and most affordable way to reduce phosphates. Review: Works - Really dusty and extra small grain sizes. Make sure you have a really fine mesh bag or reactor. Works quickly. ## Features - Permanently bonds phosphate and will not leach back into aquarium water - Rinse before use. Use 1/2 cup per 50 gallons of aquarium water - Monitor phosphate levels and replace when levels begin to rise ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0773RFPJ6 | | Best Sellers Rank | #58,366 in Pet Supplies ( See Top 100 in Pet Supplies ) #525 in Aquarium Water Treatments | | Brand | TL Reefs | | Brand Name | TL Reefs | | Customer Reviews | 4.2 out of 5 stars 276 Reviews | | Item Form | Granules | | Item Weight | 16 ounces | | Liquid Volume | 50 gallons | | Manufacturer | Lanxess Corporation | | Manufacturer Part Number | 11273227 | | Model Number | 11273227 | | Pet Type | Fish | | Target Species | Fish | | UPC | 600150909958 | | Unit Count | 1 Pounds | ## Product Details - **Brand:** TL Reefs - **Item Form:** Granules - **Item Weight:** 16 ounces - **Liquid Volume:** 50 Gallons - **Manufacturer:** Lanxess Corporation ## Images ![TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (1lb, 454g) - Image 1](https://m.media-amazon.com/images/I/71zAcB05JLL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ works FAST to reduce phosphates *by L***. on December 16, 2024* I prefer to not use socks because of the amphipods and copepods in my large mixed reef saltwater system, which is probably why a pound of this powdered GFO lasts me almost 3 years. I'm back for more, but like everything else in the aquarium hobby the price has gone up since I first got this. However, this powdered GFO is still among the most affordable options for reducing phosphates. They say 'rinse, rinse, rinse' but I'm lazy. Because I'm using a bag to hold my GFO plus filter sock to hold the GFO bag, I let the filter sock 'rinse' but I enclose a photo as some of you may not like that super fine powder that escapes the bag to be running around in the sock... but I figure even that fine powder is reducing phosphates so I'm not wasting the extra fine powder most probably rinse away and I find it is kept contained by the sock. Also, to the guy who complained about his fine bag - compare his photo of bag to my photo of bag. A fine mesh bag designed to hold powdered filter media is going to appear like solid thin fabric so that other guy was doomed just by his choice of bag. Don't just go with any bag that says it is fine - actually LOOK at the bag to ensure it looks like what you need for fine granules. You'll find many more uses for this grade of mesh, so that is what I keep around for my various aquariums needs. I have media reactor that I use cubes coated with GFO but that is a more expensive option than this powdered GFO. When the cubes exhaust their phosphate absorption and/or my reactor gets gunky, I usually am living life too busy and I have a mess on my hands I have to get under control asap so death doesn't keep rolling through my corals from too high phosphates. I like this option because it is easy and results are immediate. I use a very fine mesh bag and I just pour in this GFO. Then I put the mesh bag filled with GFO into one of my two filter socks (dual overflow system) that are in the first chamber of my sump. This forces more water thru the GFO in the fine mesh bag than if the fine mesh bag were just laying on the bottom of my sump or even if I tried stuffing the bag between sump section baffles, as water wants to take the path of least resistance which is going around my fine mesh bag stuffed with GFO. When my socks get dirty, I throw those in a bucket and collect a bunch before I deal with the sump dirty socks. I put new socks in place and just move the GFO from the dirty to clean sock, as the GFO is still in its fine mesh bag I tied shut. If you use socks or if you have a media reactor designed for powders, this powdered GFO is absolutely the easiest and most affordable way to reduce phosphates. ### ⭐⭐⭐⭐⭐ Works *by J***Y on October 10, 2022* Really dusty and extra small grain sizes. Make sure you have a really fine mesh bag or reactor. Works quickly. ### ⭐⭐⭐⭐ Great deal, read further *by A***O on January 12, 2019* As several others have noted, the granularity is very fine, and there is a fair amount of product dust. This really needs to be used with a media reactor, not just a filter bag. The larger the reactor, the better, so as to let smaller particles fall back down. That being said, this product is at an excellent price, and controls my phosphates well in my 300g mixed reef. When phosphates start to climb, for the first time, I just top off what is already there with another 1/2 - 1 cup. This gives me a little more time out of the product as a whole, rather than just throwing the entire contents out. This is my second purchase of this product, and everything has been consistent. Hope this review helps others. ## Frequently Bought Together - TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (1lbs) - Marineland Black Diamond Premium Activated Carbon, Filter Media For Aquariums, 40 Ounces - DEPEPE 10pcs 7.8 x 5.9 Inch Aquarium Filter Media Bags with Zipper for Activated Carbon, Biospheres, Ceramic Rings --- ## 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.tn/products/53035078-tl-reefs-gfo-phosphate-remover-granular-ferric-oxide-for-saltwater](https://www.desertcart.tn/products/53035078-tl-reefs-gfo-phosphate-remover-granular-ferric-oxide-for-saltwater) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-24*