Seachem Matrix – High-Porosity Biological Filter Media for Aquariums & Ponds · 250ml

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About this product

Boost your aquarium’s biological filtration with Seachem Matrix — a premium, high-porosity biomedia developed to support beneficial bacteria colonies that convert ammonia, nitrite and nitrate into less harmful molecules. Engineered for both freshwater and marine systems , Matrix features a porous inorganic structure (~10 mm granules) which gives each liter of media over ~700 m² of surface area. This internal macroporosity means bacteria can colonise both external and internal surfaces, offering enhanced biofiltration capabilities. Key Features: High porosity macroporous media supports both aerobic and anaerobic (denitrifying) bacteria. Inert, stable material — will not decompose and is safe for long-term use. Compatible with all filter types: canister, internal, external, sump, wet/dry systems. Helps maintain stable water chemistry and lower nitrate levels over time when used correctly. Usage & Dosage: Standard dosage: Use 250 mL of Matrix per 200 L (50 US gal) of water. Provide good water flow through the media for optimum bacterial colonisation.Rinse in aquarium water (not tap water) during maintenance. Do not replace unless degraded.

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