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Terms and Conditions Apply!
We can ship to any address in Australia and New Zealand. Note that there are restrictions on some products, and some products cannot be shipped to some locations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full kilo.
Seachem Matrix is a high-performance biological filtration media designed for freshwater and saltwater aquariums. Engineered to provide a vast surface area for beneficial bacteria, it promotes efficient biological filtration by supporting both aerobic and anaerobic bacteria. Matrix helps convert harmful ammonia and nitrite into less toxic nitrate, improving overall water quality and creating a healthier environment for fish, plants, and invertebrates.
High Surface Area: Provides approximately 70,000 sq. ft. per cubic meter for maximum bacterial colonization.
Versatile Application: Suitable for canister filters, sumps, hang-on-back filters, or as a standalone bio-media.
Supports Nitrate Reduction: Porous structure encourages both aerobic and anaerobic bacteria, aiding in the conversion of ammonia and nitrite to nitrate.
Long-Lasting: Does not degrade over time, providing years of effective filtration.
Safe and Non-Toxic: Made from inert materials, ensuring no harmful substances are released into the aquarium.
Placement: Can be used loose in filter chambers, in mesh bags, or in any filter system.
Dosage: Start with 100 mL per 100 liters (≈25 gallons) of water. Increase proportionally for heavily stocked or larger tanks.
Rinse Before Use: Rinse in dechlorinated water to remove dust or debris before adding to the aquarium.
Avoid Disruption: Minimize movement once established to protect beneficial bacterial colonies.
250 mL: For small aquariums or trial use.
500 mL: Ideal for medium aquariums requiring regular biological filtration.
1 Liter: Suitable for large aquariums or higher bioload systems.
2 Liters & 4 Liters: Bulk options for extensive filtration in large aquariums or aquaculture setups.
Monitor Water Quality: Regularly test ammonia, nitrite, and nitrate levels to ensure effective filtration.
Combine with Other Media: For optimal results, pair with MatrixCarbon or De*Nitrate for chemical and nitrate control.
Be Patient: Full bacterial colonization may take several weeks; monitor water parameters during this period.
Avoid Overcleaning: Rinse in tank water instead of tap water to maintain beneficial bacteria.
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