Seachem Laboratories Matrix Biological Media 250 mL

Good water quality starts with the helpful bacteria living inside your filter, and this compact size makes it easy to give them a great place to grow. Seachem Laboratories Matrix is a high porosity biomedia offered here in a 250 ml amount, designed to support efficient biofiltration for the removal of nitrogenous waste. It is a porous inorganic solid about 10 mm in diameter, made to outwork the plain plastic balls that fill many filters.

• It is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste, the buildup every stocked aquarium creates.
• Each liter of Matrix provides as much surface, more than about 700 square meters, as 170 liters of plastic balls, according to Seachem.
• It offers both external and internal macroporous surface area, while plastic bio-materials provide only external surface area.
• Its macropores are ideally sized for the support of nitrifying and denitrifying bacteria, the colonies that keep your water steady.
• Seachem says this lets Matrix remove nitrate along with ammonia and nitrite, simultaneously and in the same filter.
• That combined action is what distinguishes it from other forms of biomedia, as the brand describes.
• Each piece is a porous inorganic solid about 10 mm in diameter, built to last inside your filter.
• The 250 ml size is ideal for nano and small tanks, or a single filter compartment.
• It fits within your existing filter wherever water moves over the media.
• It gives beneficial bacteria a welcoming surface to settle and multiply.

For a smaller aquarium or a modest filter, this 250 ml of Matrix packs a lot of bacterial surface area into an easy-to-handle amount. Set it into your filter, let the helpful bacteria take hold, and let the media support the cycle that keeps your fish comfortable day after day. Every claim and figure here is drawn straight from Seachem's own description, so you can keep your biofiltration grounded in facts while you enjoy a clear, well-balanced tank.