Seachem Matrix 1L**1L size Treats up to 200 gallons (800 liters) of Aquarium water Matrix is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrix is a porous inorganic solid about 10 mm in diameter. Each liter of Matrix provides as much surface (>~700 m2) as 170 liters of plastic balls! Plastic bio materials provide only external surface area, whereas Matrix provides both external and internal macroporous surface

Pairs extremely well and can house the Tunze 9001 Protein Skimmer

Install with black side facing the display of the aquarium

Does not hinder access to the chamber areas or other equipment

Reduces organics

Skimmer Knockout:

Unlike a media bag

Depth:  2-3/4"

First of its kind removable acrylic shelf

Keep debris from collecting on corals

Superior filtration for Reef

) (across an aquarium length of 2 m / 78

and keeping the rear chambers more clean