SeaChem Matrix Bio-Media Granules 4 Liter

Matrixª 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 Matrixª 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 Matrixª for each 400 L (100 gallons*) of water. Matrixª may be placed in any kind of filter, and is particularly effective in a canister filter. Matrixª is sufficiently large that no filter bag should be required for most applications. Matrixª works well in drip tray systems, but you may find that the larger Pond Matrixª is better suited for such applications. Royal Item Number: ASM119