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Absolutely! The Matrix serves as a wonderful home for beneficial bacteria to colonize. It provides 140 times the surface area of other medias such as bio balls, thus allowing for more bacteria to thrive and keep your ammonia, nitrite, and nitrate levels in check. The Matrix will never breakdown or need to be replaced, but may need to be rinsed from time to time to remove any sludge buildup that may occur on the outer surface.