Seachem Matrix 4 L – Premium Biological Filter Media for Large Aquariums & Ponds
Description
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:
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High-porosity biological media made from natural inorganic rock
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Provides both aerobic & anaerobic zones for complete nitrogen cycle filtration
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Extremely durable – does not break down or need frequent replacement
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Safe for freshwater, marine, and pond environments
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Treats up to 3,200 L (850 US gal) of water per 4 L container
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Compatible with canister filters, sumps, internal filters, or trickle towers
Usage Instructions:
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Use 250 mL per 200 L (50 US gal) of water
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Rinse gently in aquarium water before placement
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Place in a filter bag or dedicated media chamber with good water flow
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Never clean with tap water to protect bacterial colonies
Delivery & returns
Free delivery across Malta on orders over €35. Orders are prepared at our shop in Ħ'Attard. See our shipping and refund policies for timings and conditions.