Description
xOverview
Seachem Matrix is a high-porosity, inorganic biomedia designed to support the beneficial bacteria that transform nitrogenous waste into safer compounds in your aquarium. As a high-capacity media, Matrix provides a vast amount of surface area, promoting efficient contact between water and microbial colonies in both marine and freshwater tanks. Because the media is inert, it resists breakdown, so you can typically leave it in your filter for the long term while you tune parameters and stock levels.
What makes Matrix effective
- Extremely high porosity with a surface area that translates to more contact points for biofiltration.
- Macropores create internal and external spaces ideal for nitrifying and denitrifying bacteria to thrive.
- The design supports simultaneous processing of ammonia, nitrite, and nitrate within the same filter.
- Versatile use: compatible with canister filters, drip tray setups, and other filter configurations.
How to use and fit
Use 250 mL of Matrix for every 200 L (50 US gallons) of tank water. Matrix can be placed in any filter type—wet or dry—and performances are strong in canister systems as well as drip trays.
Being inert and non-degrading, Matrix rarely requires replacement. Since most bacteria reside within the media, you can rinse Matrix when needed without harming the established biofilm.
Care, maintenance, and real-world setup tips
- Rinse briefly to remove loose debris, preserving the growth of biofilm for ongoing filtration.
- Monitor your tank’s bioload and filtration needs to determine how much Matrix to use.
- In marine and freshwater setups, Matrix can help stabilize nitrogenous waste levels when paired with regular maintenance and compatible equipment.
Use cases and scenarios
In a reef-ready marine tank, Matrix’s macropores provide ample space for bacterial communities while the inert media won’t alter water chemistry. In community freshwater tanks, Matrix can help keep ammonia, nitrite, and nitrate in check as you acclimate new stock. The combination of high surface area and durable construction makes Matrix a long-term filtration companion when used as directed.
FAQ
Q: What is Seachem Matrix High Capacity Biofilter used for?
A: It supports nitrifying and denitrifying bacteria to help manage ammonia, nitrite, and nitrate in marine and freshwater tanks.
Q: How much Matrix should I use per 200 L?
A: Use 250 mL of Matrix per 200 L; inert, won't break down, and can be rinsed without harming the filter.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
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 you choose, 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 pound.
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