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MarinePure Biofilter Media Spheres are a ceramic biological filter medium from CerMedia, sold as 1.5-inch spheres in a 2-quart quantity. Their open, interconnected pores let water flow through the media rather than around it, so a thin bio-film forms and sheds without clogging. They fit sumps, canister filters, trickle and shower filters, waterfall filters and hang-on-back filters. Reef and fish keepers use them to convert ammonia and nitrite and to lower nitrate, and they compete with sintered glass and plastic bio-balls on surface area and clog resistance.
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Lowest price we've seen: $29.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Owners of MarinePure spheres generally report strong biological filtration and stable water chemistry once the media is seeded. Some note dust and breakage when shaping the spheres and say the media is heavier than plastic alternatives.
MarinePure Biofilter Media by CerMedia is a biological filter media for aquariums. These 1.5-inch spheres come in a 2-quart size. The media gives beneficial bacteria a surface to grow and multiply on.
It removes ammonia and nitrites from aquarium water and reduces nitrate levels. This helps fish waste and other harmful waste break down more readily, which makes for a cleaner tank environment.
The surface is porous, with open, interconnected holes that allow a thin bio-film to form. The bio-film provides nutrients for beneficial bacteria. Water flows through the media rather than around it, so the bio-film can recycle and replenish without clogging the pores.
