CerMedia MarinePure 1.5" Sphere Bio Filter Media – 1.9L

Advanced Bio-Filtration for Cleaner, Healthier Aquariums

The MarinePure 1.5" Sphere Bio Filter Media (1.9L) provides unmatched biological filtration by offering maximum surface area for beneficial bacteria to grow. Engineered with Thin Bio-Film Technology, each ceramic sphere is designed to rapidly eliminate ammonia and nitrites while helping to lower nitrates, promoting stable water chemistry and healthier aquatic life.

Ideal for freshwater and marine aquariums, these spheres are perfect for sumps, canister filters, and wet/dry filtration systems. The 1.5" size is easy to work with, highly durable, and can be used in custom filtration layouts.

Key Features

• 1.9L volume of 1.5" ceramic spheres

• Each sphere = surface area of 1,350 plastic bio-balls

• Designed for ammonia and nitrite removal

• Promotes denitrification for lower nitrates

• Reduces tank maintenance and increases bio-load capacity

• Open-pore structure ensures water flows through—not around—the media

• Chemically inert and stable in all aquatic environments

• Compatible with sump, canister, wet/dry filters