SeaChem Matrix Bio-Media Granules 4 Liter Harnesses The bottom of the bed

The bottom of the bed has a layer of "stay put" non-slip fabric

100% natural ground English walnut shell

positioned horizontally or vertically

digestible protein source

InTune has encapsulated probiotics that ensure a higher amount of active and beneficial microorganisms

SeaChem Matrix Bio-Media Granules 4 Liter Harnesses The bottom of the bedMatrix is a highly porous media designed to provide exceptionally efficient biofiltration for single site removal of ammonia, nitrite, and nitrate from freshwater, marine, and reef aquaria. Each liter of Matrix provides over 160,000 cm2 (170 sq. ft.) of surface, equivalent to over 40L (10 gallons) of typical plastic ball media! This product is sold by volume. Cited weight is minimal weight. DIRECTIONS: Use 1 L of Matrix for each 400 L (100 gallons*)