CerMedia MarinePure Bio Filter Media 8x8x4" Block
Deep-Cleaning Biological Filtration for High-Performance Aquariums
The CerMedia MarinePure 8x8x4" Block is a premium-grade biological filter media designed for advanced aquarists who demand efficient waste breakdown and consistent water chemistry. This larger block offers a vast surface area and deep internal structure, perfect for ammonia, nitrite, and nitrate removal—including de-nitrification in low-flow or passive systems.
Its Thin Bio-Film Technology supports powerful bacterial colonisation while preventing clogging and allowing unrestricted water flow through the media. Whether you're running a reef tank, freshwater sump, or replacing traditional live rock, this is the ultimate upgrade for serious filtration.
Key Features
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Dimensions: 8" x 8" x 4"
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Removes ammonia, nitrite, and nitrate
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Supports deep anaerobic zones for effective de-nitrification
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Replaces live rock in marine systems
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Massive surface area for bacteria to colonise
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Designed for sump use or passive/low-flow applications
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Improves water quality and reduces maintenance
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Perfect for high-bioload tanks with tight filtration footprints
