Seachem Matrix


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  • High capacity biofiltration
  • Controls ammonia, nitrite, and nitrate
  • Highly porous – enormous surface area (>~700 m2/L)
  • Supports aerobic and anaerobic bacteria species



Matrixâ„¢ is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrixâ„¢ is a porous inorganic solid about 10 mm in diameter. Each liter of Matrixâ„¢ provides as much surface (>~700 m2) as 170 liters of plastic balls! Plastic bio-materials provide only external surface area, whereas Matrixâ„¢ provides both external and internal macroporous surface area. These macropores are ideally sized for the support of nitrifying and denitrifying bacteria. This allows Matrixâ„¢, unlike other forms of biomedia, to remove nitrate along with ammonia and nitrite, simultaneously and in the same filter.

Matrixâ„¢ is completely inert and will not breakdown. It need not be replaced. Since the majority of the bacteria are internal, Matrixâ„¢ may be rinsed when needed without damaging the filter. Matrixâ„¢ is compatible with all types of wet or wet-dry filters.

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