--- product_id: 272348020 title: "Seachem Matrix Carbon for Fish" brand: "seachem" price: "11148 kr" currency: ISK in_stock: true reviews_count: 5 category: "Seachem" url: https://www.desertcart.is/products/272348020-seachem-matrix-carbon-for-fish store_origin: IS region: Iceland --- # Lowest leachable phosphate on market Minimal pH impact due to low ash content Spherical bead design for max water flow Seachem Matrix Carbon for Fish **Brand:** seachem **Price:** 11148 kr **Availability:** ✅ In Stock ## Summary > 💧 Elevate your aquarium’s clarity with the science of flawless filtration! ## Quick Answers - **What is this?** Seachem Matrix Carbon for Fish by seachem - **How much does it cost?** 11148 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/272348020-seachem-matrix-carbon-for-fish) ## Best For - seachem enthusiasts ## Why This Product - Trusted seachem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Stable pH Performance:** Low ash content guarantees your water stays balanced, never exceeding pH 7.0—even in distilled water. - • **Ultra-Low Phosphate Levels:** Industry-leading minimal leachable phosphate protects your aquatic ecosystem from unwanted nutrient spikes. - • **Double the Filtration Power:** Outperforms other carbons by 2x in organic matter removal, adsorption speed, and longevity. - • **Hydrodynamic Spherical Beads:** Engineered for optimal water flow and no packing, ensuring superior filtration efficiency. - • **Precision Macroporous Structure:** Bituminous coal-based carbon targets larger organic molecules, perfect for crystal-clear aquarium water. ## Overview Seachem Matrix Carbon is a premium, spherical activated carbon designed for aquarium filtration. Its unique macroporous structure and low ash content ensure maximum water flow, minimal pH disruption, and the lowest leachable phosphate levels available. Delivering twice the filtration capacity and longevity compared to standard carbons, it’s the go-to choice for professional-grade aquatic care. ## Description MatrixCarbon is a truly unique activated carbon. It is formed as a spherical bead for optimum hydrodynamics, and will not pack. It permits maximum water flow and contact with its high density of macroporous binding sites. MatrixCarbon has a very low ash content as indicated by its minimal impact on pH. Even when added to distilled water, it does not raise pH above 7.0. While all carbons contain phosphate, regardless of false claims to the contrary, MatrixCarbon has the lowest detectable leachable phosphate content of all major carbon brands tested. MatrixCarbon outperforms other high grade carbons by at least two fold when compared for total capacity to remove aquarium organic matter, rate of adsorption, and duration of use. While carbon is generally considered to be a chemical filter, that is not precisely true. It is in fact a mechanical filter as well, but it is only capable of mechanically filtering objects of molecular size. It functions through extremely small cracks and crevices, called macropores and micropores. Microporous carbons remove primarily metals and smaller ions like trace minerals and are best suited to air filtration, while macroporous carbons remove primarily larger organic molecules like nitrogenous waste and are best suited to water filtration. The ingredients from which a carbon is manufactured determine whether it will be macro or microporous. Carbons made from coconut shell and other organic products form microporous carbons, while carbons made from bituminous coal form macroporous carbons. MatrixCarbon is a bituminous coal based, macroporous carbon. It is the only spherical carbon on the market, allowing for maximum water flow. It is sized to allow full penetration by water, but not small enough to escape filter bags. All carbons contain phosphate. However, that phosphate DOES NOT come from washing the carbon with phosphoric acid. Most carbons are washed with sulfuric acid. The phosphate is contained in the ash from the carbon source. The main purpose of acid washing is to remove ash. Because of MatrixCarbon's hydrodynamic properties, more ash is washed from our carbon than any other. Therefore, it has the lowest leachable phosphate on the market. Sizes: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L Review: This is a great product for my crab tank. I like that I do not have to store large bags of salt. Review: Only been a few days, no changes yet. ## Features - High efficiency spherical carbon - Very little impact on pH due to low ash content - Lowest leachable phosphate level on market ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000255S00 | | Allergen Information | Yam Free | | Batteries Included | No | | Best Sellers Rank | #41,524 in Pet Supplies ( See Top 100 in Pet Supplies ) #351 in Fish Medication & Health Supplies | | Color | standard | | Customer Reviews | 4.6 4.6 out of 5 stars (619) | | Date First Available | 1 January 2024 | | External Testing Certification | Não aplicável | | Item Form | Granules | | Item Weight | 671 g | | Item model number | 107 | | Number of Items | 1 | | Pet Life Stage | All Life Stages | | Pet Type | Amphibian | | Product Dimensions | 20.07 x 9.4 x 9.14 cm; 671 g | | Quantity | 1 | | Size | 1 LITER | | Specific Uses | Aquarium Filtration | | Volume | 1 Liters | | batteries required | No | ## Product Details - **Brand:** Seachem - **Item form:** Granules - **Item weight:** 0.67 Kilograms - **Liquid volume:** 1 Liters - **Manufacturer:** Seachem Laboratories, Inc. ## Images ![Seachem Matrix Carbon for Fish - Image 1](https://m.media-amazon.com/images/I/61KzA7obL8L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***Y on 14 December 2025* This is a great product for my crab tank. I like that I do not have to store large bags of salt. ### ⭐⭐⭐ Review *by L***N on 1 February 2025* Only been a few days, no changes yet. ### ⭐⭐⭐⭐⭐ Review *by D***D on 15 January 2014* Bigger the tub, better the value. Lets just get that obvious statement out of the way. With that in mind Seachem Carbon can be bought at a good price which is very good to know considering you are buying the best. I pour mine into a Seachem "The Bag" filter media bag. When you pour this carbon from the pot to the bag there is no cloud of carbon dust. That alone brings a smile to my face. Rinsing is quick as the initial cloud of black goes away almost instantly, another smile on my face. The result is crystal clear water with no odor or residue and it works for months. The water purity you get from this carbon is amazing. One big happy smile. Thank you Seachem. ## Frequently Bought Together - Seachem Matrix Carbon 1 Liter - Purigen & Matrix Bio Media 250ml - Seachem Matrix Bio Media 1 Liter --- ## 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/272348020-seachem-matrix-carbon-for-fish](https://www.desertcart.is/products/272348020-seachem-matrix-carbon-for-fish) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-04-23*