CerMedia MarinePure Aquarium Bio-Filter Spheres, 3.8 L, High-Surface-Area Ceramic Media

CerMedia MarinePure 1.5-inch (3.81 cm) ceramic bio-filter spheres support ammonia and nitrite removal and nitrate reduction in freshwater and marine aquariums.

• Open-flow ceramic porosity and vast surface area — provides a high-surface-area format for aquarium biofiltration.
• One sphere has the same surface area as 1,350 plastic bio-balls — a ceramic alternative to conventional plastic bio-balls.
• Supports ammonia and nitrite removal, plus nitrate reduction — serves key filtration needs in aquarium systems.
• Inert ceramic — made for use in freshwater and saltwater aquariums.
• Suitable for wet/dry filters, sumps, and canister filters — fits several common filtration setups.

Aquarium filtration media needs to provide surface area while allowing water to flow through it. MarinePure spheres are made for that role, giving aquarium keepers a ceramic bio-filter option for both marine and freshwater systems. Their spherical form and open-flow porosity make them suitable for filter compartments where water passes through biological media.

What filtration functions does MarinePure support?

CerMedia MarinePure is designed for ammonia and nitrite removal and nitrate reduction in aquarium filtration. Its porous ceramic structure combines extensive surface area with open flow, bringing those stated filtration functions together in one media type. The surface-area comparison offers a clear point of reference: one sphere matches the surface area of 1,350 plastic bio-balls.

• Intended for biological filtration in marine and freshwater aquariums.
• Made from inert ceramic rather than plastic bio-ball material.

Which aquarium filters can hold these spheres?

CerMedia MarinePure spheres can be used in wet/dry filters, sumps, and canister filters. Each sphere measures 1.5 inches (3.81 cm), so compare that diameter with the available space in your filter compartment before choosing where to place the media.

• Compatible filter types: wet/dry, sump, and canister systems.
• The stated sphere diameter gives a practical fit reference for filter chambers.

How much MarinePure media is included?

This CerMedia MarinePure product is supplied as a 1-gallon (3.8 L) volume of bio-filter spheres in white to off-white. The package quantity is given by volume, while the individual media pieces are spherical; no individual sphere count is needed to identify the stated amount.

• Media form: ceramic spheres.
• Color: white to off-white.

MarinePure is suited to aquarium keepers building biological filtration into freshwater or marine systems with a wet/dry filter, sump, or canister filter. Its stated filtration functions, ceramic construction, and sphere size help buyers assess both purpose and fit. It is a ceramic sphere media option for aquarium filtration rather than a plastic bio-ball.

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