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Maintain perfect water quality in even the largest aquariums and ponds with Seachem Matrix 4 L, a high-capacity biological filtration media designed to house vast colonies of beneficial bacteria.
Matrix is a porous inorganic biomedia with an enormous surface area — over 700 m² per litre — providing space for both aerobic and anaerobic bacteria. This dual-action process helps break down ammonia, nitrite, and nitrate, resulting in crystal-clear, stable water and a healthier environment for your fish and plants.
The 4-litre pack is ideal for large freshwater or marine aquariums, sumps, or pond filtration systems, offering long-term performance without the need for frequent replacement.
Key Features:
High-porosity biological media made from natural inorganic rock
Provides both aerobic & anaerobic zones for complete nitrogen cycle filtration
Extremely durable – does not break down or need frequent replacement
Safe for freshwater, marine, and pond environments
Treats up to 3,200 L (850 US gal) of water per 4 L container
Compatible with canister filters, sumps, internal filters, or trickle towers
Usage Instructions:
Use 250 mL per 200 L (50 US gal) of water
Rinse gently in aquarium water before placement
Place in a filter bag or dedicated media chamber with good water flow
Never clean with tap water to protect bacterial colonies
