Search  for anything...
Seachem

Seachem Matrix Bio Media 1 Liter

  • Based on 2,595 reviews
Condition: New
Checking for product changes
$16.79 Why this price?
Memorial Day Sale · 35% off was $25.95

Buy Now, Pay Later

As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, May 26
Order within 21 hours and 27 minutes
Available payment plans shown during checkout

Recently Viewed

Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L


Features

  • Made in United States
  • Package Dimensions : 3.75 L x 8.0 H x 3.75 W (inches)
  • Package Weight : 2.0 pounds

Description

Matrix is a highly porous media designed to provide exceptionally efficient bio filtration for single site removal of ammonia, nitrite, and nitrate from freshwater, marine, and reef aquaria. Each liter of matrix provides over 160,000 cm2 (170 sq. Ft.) of surface, equivalent to over 40 L (10 gallons) of typical plastic ball media! this product is sold by volume. Cited weight is minimal weight. Matrix is a naturally mined, chemically inert material for facilitating the growth of biological filtration in aquarium and pond systems. Due to its organic nature - size, shape, coloration, and density of the matrix material will vary slightly between packages. Any of These variants and small irregularities in sizing are perfectly natural and will not affect the integrity of the product or its ability to maintain water quality. It will also not affect pH in the system.

Brand: Seachem


Liquid Volume: 1 Liters


Item Weight: 1.7 Pounds


Item Form: Solid


Target Species: Fish


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 7.9 x 3.7 x 3.7 inches; 1.67 Pounds


Item model number ‏ : ‎ 117


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ April 14, 2008


Manufacturer ‏ : ‎ Seachem Laboratories, Inc.


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #32,285 in Pet Supplies (See Top 100 in Pet Supplies) #361 in Aquarium Filter Accessories


#361 in Aquarium Filter Accessories:


Item Weight: 1.67 pounds


Department: Unisex-Adult


Manufacturer: Seachem Laboratories, Inc.


Country of Origin: USA


Item model number: 117


Date First Available: April 14, 2008


Item Package Dimensions L x W x H: 8.03 x 3.74 x 3.66 inches


Item Dimensions LxWxH: 7.9 x 3.7 x 3.7 inches


Item Weight: 1.7 Pounds


Brand Name: Seachem


Target Audience Keyword: fish


Directions: Place the Seachem Matrix in your aquarium or pond filter for efficient biofiltration and removal of nitrogenous waste.


Model Name: Matrix 1 L


Color: grey


Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L


Material: Plastic


Age Range Description: all stages


Number of Items: 1


Included Components: all


Specific Uses for Product: Active


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • If you have aquarium, you need these
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
Seachem is a great product. I use these bio media in two of my Tidal 75 filters to provide space for beneficial bacteria to thrive. Like all bio media, in time the tiny pores will get clogged and no longer work and need to be replaced. This is a great replacement. 1 liter bottle will last me for quite some time. ... show more
Reviewed in the United States on August 26, 2024 by stargazer
    • This stuff is great!
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
I use it in my 3 beta tanks. Keeps my water crystal clean and my ammonia at 0 with regular water changes.
Reviewed in the United States on June 20, 2024 by NOLA Gurl
    • Great addition to my canister filter
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
Rinse the dust off and put it a mid basket of you filter. Great addition to a functional filtering system from a respected brand
Reviewed in the United States on August 24, 2024 by Kenneth Noll
    • Bueno
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
Bueno
Reviewed in the United States on September 22, 2024 by Amazon Customer
    • Well known, trusted filter media
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
This product is well known for being excellent at providing a place for beneficial bacteria to grow and flourish. It is not overly expensive so I got some and added it to one tray in my cannister filter. It, along with a tray that has a bioball/ceramic ring combo makes up the bulk of my biological filtration with a large coarse sponge pre-filter helping also. This should be more than enough to handle my 75 gallon tank. I also have some sponge media for mechanical filtration but I like to rinse these with tap water so that the bacteria multiplies where I want it and not on the sponge that will eventually get replaced. The only issues I have are 1. There is at least half of this that is very dense like a rock. It is not all porous. That is not a deal breaker because I want bacteria growing in different ways and hopefully I will attract different types. 2. This really does need a bag to hold it. It will work in the cannister but the smaller pieces move and get wedged under the tray handles preventing it all from stacking correctly. I fit this into two media bags and this just makes it easier to clean but you will need to purchase a bag. Overall, based on reputation alone this is worth having in a tray. There is enough porous rock to justify the cost and now I have a nice diverse set of media in my filter working 24 hours a day. ... show more
Reviewed in the United States on January 3, 2021 by P Shif
    • Matrix is a great product - despite confusion about packaging and contents.
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
Seachem Matrix is a great natural medium for colonizing both nitrifying and denitrifying bacteria so important for good water chemistry and the health of one's aquarium inhabitants. I noticed many users have complained about receiving an adulterated product, and frankly I thought I had received one as well. I called Seachem and got the scoop. Here's what I found out: Matrix is a natural, mined product. The mineral has natural variations in size and color. When mined, black Obsidian is sometimes included in the take. The Obsidian is removed by hand before packaging, but some slips into the container from time to time. The packaging does not have a tamper-proof seal beneath the lid. When you open the jar, you immediately see the product. Matrix is sold by volume and not by weight. A minimum weight is listed in the literature (e.g.: 1 liter of Matrix = 400 gram net weight) but this is required by law, and has nothing to do with the actual weight of the product, which can vary greatly due to Matrix absorbing moisture from the air, for example. The 1 liter of Matrix I received weighted 967 grams out of the jar. When you receive Matrix, expect it to vary in color, size, and that there may be a few dark or black rocks in the jar. Now for the actual use. Matrix provides a tremendous amount of surface area. The outer surfaces and crevices provide a very hospitable environment for the aerobic (oxygen consuming) nitrifying bacteria that make up the 'bio filter' so critical to breaking down Ammonia to Nitrite, and Nitrite to Nitrate. It's benefit doesn't stop there. At the end of the aerobic portion of the Nitrogen Cycle, nitrate is left to build up in the water column, and is one of the major pollutants that dictate the frequency and quantity of water changes. Nitrate can be reduced to Nitrogen gas - but this is an anaerobic (oxygen deprived) process requiring another type of bacteria. Nitrate laden water seeps into the core of Matrix after having been stripped of oxygen by the aerobic bacteria on the medium's surface. This oxygen-poor environment is perfect for colonizing anaerobic bacteria that consume Nitrate and release inert Nitrogen gas. This final step in the Nitrogen Cycle helps control the buildup of Nitrate in the aquarium, contributing markedly to the long term health of it's inhabitants. ... show more
Reviewed in the United States on November 12, 2014 by Ray Sundstrom
    • The best
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
Nothing has made our tank as clear! I found this product on YouTube while searching for solutions for bloom.
Reviewed in the United States on July 3, 2024 by Tony
    • Excellent Media I am impressed
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L
I have a new 55 gallon tank about 2 months old, I seeded it with old gravel in panty hose and I squeezed the brown muck into my tank, needless to say I am neurotic and I can't leave my tank alone. I change the water pretty much every other day. My ammonia and nitrite levels have been fluctuating. As soon as they were both 0 I changed the canister water and rinsed the poly pad in aquarium water. I vacuumed the gravel all in the same day and now i'm having a mini-cycle. I was then told the polypad would fall apart eventually and all I needed in my high powered canister filter was biofilter ceramic media. I have been slowly trying to get to only that but with 2 goldies , I dont want them suffering any ammonia spikes so I keep adding expensive tricks like API-absorb and it works for a day and sometimes up to 5 but not after that. This arrived this evening, I put it in an hour ago went to dinner and everything is at 0! Mind you an hour ago my ammonia was.5 my nitrites were .25.My water was cloudy and it is crystal clear ... show more
Reviewed in the United States on May 16, 2015 by Jennifer N. Mccall

Can't find a product?

Find it on Amazon first, then paste the link below.