Seachem Matrix is a highly porous biomedia designed to provide exceptionally efficient biological filtration for the removal of nitrogenous waste in both freshwater and saltwater aquariums. Unlike traditional plastic bio-media, Matrix utilizes a vast network of internal macroporous surface area to support beneficial bacteria. This unique structure allows it to effectively eliminate ammonia, nitrite, and even nitrate simultaneously within the same filter system, leading to a healthier and more stable aquatic environment.

Each liter of Matrix provides over 700 square meters of surface area, equivalent to 170 liters of plastic filter balls. The inorganic solid media is approximately 10 mm in diameter, making it large enough for use in most applications without a filter bag. It is completely inert, meaning it will not break down over time and never needs to be replaced. Because the majority of the beneficial bacteria colonize the internal pores, the media can be gently rinsed during maintenance without destroying the biological filter.

This product is ideal for any aquarist seeking a superior, low-maintenance biological filtration solution. It is particularly beneficial for reef tank owners who need robust nitrate control to maintain pristine water quality for sensitive corals and invertebrates. Suitable for use in all types of wet or wet-dry filters, sumps, and canister filters, Matrix offers a permanent and highly effective foundation for biological stability in any aquarium system.