Aquaclear Fish A1373 70-Gallon Biomax,White,Large BreedsFilter Compatibility: Compatible with AquaClear 70 Power Filter. Water Clarification: BioMax is a premium grade biological filter media that provides superior filtration and helps reduce and control ammonia and nitrate levels for a healthy nitrogen level in the water. Ideal Environment: BioMax helps create crystal clear water, making ideal conditions for fish and plants in your tank. The complex porous design ensures optimal contact time as water