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Seachem Matrix Bio Media 1 Liter

4.8 4.8 out of 5 stars 2,522 ratings

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

Purchase options and add-ons

Brand Seachem
Liquid Volume 1 Liters
Item Weight 1.67 Pounds
Item Form Liquid
Target Species Fish

About this item

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

Customer ratings by feature

Easy to use
4.8 4.8
Stability
4.8 4.8
Easy to clean
4.5 4.5
Value for money
4.5 4.5

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Seachem Matrix Bio Media 1 Liter
Seachem Matrix Bio Media 1 Liter
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Price-26% $19.25
List:$25.95
$8.99$22.99$7.99-63% $6.66
List:$17.96
-38% $18.49
List:$29.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Value for money
4.5
4.2
4.4
4.4
4.6
Easy to use
4.8
4.6
4.9
4.8
Stability
4.8
5.0
4.6
4.8
Sold By
Amazon.com
One Way Pet
Amazon.com
Amazon.com
Amazon.com
Asavvysavers
target species
Fish
Fish
Fish
Fish
Fish
Fish
liquid volume
1 liters
160 milliliters
5 liters
250 milliliters
250 milliliters
500 milliliters
form
Liquid
Liquid
Pellets
Liquid
Stick
Liquid
weight
1.67 pounds
4.16 ounces
2.84 kilograms
12 ounces
8 ounces
0.61 kilograms

Product details

  • 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.
  • ASIN ‏ : ‎ B0002A5VIO
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.8 4.8 out of 5 stars 2,522 ratings

Looking for specific info?

Product 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.

Customer reviews

4.8 out of 5 stars
4.8 out of 5
2,522 global ratings

Customers say

Customers like the quality, filter, nitrates, and bacteria of the aquarium pond water treatment product. They mention that it's great for building your biological filter, and that it really gets rid of nitsrates. They also appreciate the clarity, ease of cleaning, and space. Overall, customers are happy with the product and recommend it to others.

AI-generated from the text of customer reviews

106 customers mention98 positive8 negative

Customers are satisfied with the quality of the aquarium pond water treatment product. They mention that it works well, has good results, and is a reliable performer as a bio media. Some say that it's better than cylinder shape products.

"...That is ok by me because it has been a reliable performer as a bio media and final mechanical protectant for the last trays of Biohome, which has..." Read more

"...you just bought a bottle of expensive grey pebbles, but this shit is actually awesome...." Read more

"...This is the first product I have found that actually does. And it is cheap...." Read more

"...filter floss and my water is not only crystal clear, but also perfect paramaters. My ph is always around 7-7.5 0 nitrates and nitrates and 0 ammonia!..." Read more

22 customers mention22 positive0 negative

Customers are satisfied with the filter. They mention that it's the best biological filter medium they've used, it'll build your aquarium filter, and it'd be great inside a canister filter. Customers also say that it does excellent work on a bio filter and keeps the water crystal clear.

"...I couldnt ask for a better, low maintenance aquarium! I use this on a 29 gallon angelfish tank as well as a 60 gallon community tank." Read more

"This is great for the fish tank." Read more

"Best filtration media bar none. I have been in the hobby for 30 years and I've tried it all...." Read more

"...It did excellent work on bio filter and keep the water crystal clear , I have noticed the Nitrates is almost 0 since I started using the product..." Read more

21 customers mention17 positive4 negative

Customers like the nitrates in their aquarium or pond. They say the product really gets rid of nits, keeps ammonia and nirite at 2 ppm, and has never seen any issue with natrates. Some say that the product works great in a reactor and is better for reducing ntrates there.

"...bacteria for a week and finally had a full cycle and now no detectable ammonia or nitrite!!..." Read more

"These works great at removing ammonia and nitrite...." Read more

"...It keeps ammonia and nitrite at 2 if used as recommended...." Read more

"...filter and keep the water crystal clear , I have noticed the Nitrates is almost 0 since I started using the product..." Read more

19 customers mention19 positive0 negative

Customers are satisfied with the bio media. They mention it's a great product for biofiltration, superior, and excellent for bio filtration. The center of each piece is perfect for creating an anerobic environment for bacteria to colonize, and it helps make tanks healthier.

"...The holes closer to the center of each piece are perfect for creating an anerobic environment for bacteria to colonize and digest nitrates...." Read more

"Seachem Matrix is a great natural medium for colonizing both nitrifying and denitrifying bacteria so important for good water chemistry and the..." Read more

"Large bottle enough for least 6 months, this media is great and transformed my tank that I had let get away from me...." Read more

"...Great product and it really helped give my tank the bio boost that it needed to keep Ammonia and Nitrites at 0 ppm...." Read more

17 customers mention17 positive0 negative

Customers find the product to be a great product for bacteria growth and nitrate reduction. They say it holds beneficial bacteria better than any other product, and helps create surface area for beneficial bacteria production. Customers also say the product supports anerobic and aerobic bacteria, and that it grows rapidly on it.

"...each piece, which are where the majority are located, are perfect for aerobic bacteria that consume ammonia and nitrites...." Read more

"...I've been using it for about a year now and it's really helped grow the bacteria needed to keep his water level stable and healthy...." Read more

"...This is a very good product, the bacteria grows rapidly on it and it is the only thing I use on my 120 gallon as far as bio media...." Read more

"...Much more surface area for beneficial bacteria than ceramic bio rings or plastic bio balls." Read more

17 customers mention15 positive2 negative

Customers like the clarity of the aquarium pond water treatment. They say it clears cloudy water and removes ammonia. Some customers also mention that the water looks incredible and is crystal clear.

"...I went to bed and in the morning the water was crystal clear. Its been 3 days and still crystal clear-from the front and crystal clear from the side...." Read more

"...ammonia was.5 my nitrites were .25.My water was cloudy and it is crystal clear" Read more

"...I now use this, purigen and filter floss and my water is not only crystal clear, but also perfect paramaters...." Read more

"...These makes water crystal clear. Make sure to test your water every 2-4 weeks to make sure your water parameters are good...." Read more

17 customers mention12 positive5 negative

Customers find the filter material easy to clean. They say it keeps their tank water super clean and can be rinsed off and reused forever. Some customers also mention that the filter medium can be used once a year.

"...all HOB filters in overstocked tanks. keeps water clean and safe" Read more

"It's pumice stones but clean and works as well as other bio media...." Read more

"...In conjunction with Purigen, my tank is clear, clean, and beautiful ... I clean it about once a month or so...." Read more

"...decent rinse before you add this to your set up...they are pretty dusty out of the bottle, so a very quick rinse will clean that up!..." Read more

14 customers mention10 positive4 negative

Customers like the space provided by the aquarium pond water treatment product. They mention that the Matrix provides a tremendous amount of surface area, the 1L jug can easily fill an entire media tray on its own, and the bio media was a good size. They also say there's a decent amount of different sizes, which provides plenty of room for bacteria to hang out. Overall, customers are happy with the space and recommend it to others.

"...All this results in better water quality is more capacity for livestock. Don't buy another brand of bio media, as it will be subpar to Matrix." Read more

"...Now for the actual use. Matrix provides a tremendous amount of surface area...." Read more

"...They're wonderfully absorbent and have plenty of surface area...." Read more

"...There's not enough room without doing some serious shuffling around of the media. I know it works for the canister filter." Read more

I use with ceramic tubes in emperor carbon filter cages.
5 Stars
I use with ceramic tubes in emperor carbon filter cages.
I used this with seachem bacteria for a week and finally had a full cycle and now no detectable ammonia or nitrite!! My bottle was filled to the brim and some are large and some are small but in all it works and I never have to bother it again once in my cage as a biological media filter!
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Top reviews from the United States

Reviewed in the United States on July 20, 2023
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Customer image
5.0 out of 5 stars works great
Reviewed in the United States on July 20, 2023
used in all of my tanks. all HOB filters in overstocked tanks. keeps water clean and safe
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Customer image
Reviewed in the United States on November 26, 2020
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Customer image
5.0 out of 5 stars Working good so far.
Reviewed in the United States on November 26, 2020
A lot more in the container than expected! I got 2 for my three canister filters. A bit more than a 1.25 of a litre.
It is natural rock so there was a few rocks that I not look like they had pours in the rock so decided to toss them out. Just the lid’s worth of cast off. Surprised that their quality control is so lax that that many black rocks would get through in a white product.

Since I am replacing bio media already in an established tank I’m doing it 1/4 at a time. So every week and a half I am doing doing another 1/4th so that the existing bio media is not wiped out in a huge swap.
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7 people found this helpful
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Reviewed in the United States on December 11, 2023
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Reviewed in the United States on December 18, 2022
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
4 people found this helpful
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Reviewed in the United States on January 3, 2021
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
4 people found this helpful
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Reviewed in the United States on November 12, 2014
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
111 people found this helpful
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Reviewed in the United States on July 7, 2023
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Customer image
5.0 out of 5 stars I use with ceramic tubes in emperor carbon filter cages.
Reviewed in the United States on July 7, 2023
I used this with seachem bacteria for a week and finally had a full cycle and now no detectable ammonia or nitrite!! My bottle was filled to the brim and some are large and some are small but in all it works and I never have to bother it again once in my cage as a biological media filter!
Images in this review
Customer image
Customer image
Reviewed in the United States on December 27, 2020
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
2 people found this helpful
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Top reviews from other countries

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Rodrigo Vasconcelos
5.0 out of 5 stars Excelente Produto.
Reviewed in Brazil on May 17, 2023
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Ricardo Pliego Seguin
5.0 out of 5 stars Excelente medio filtrante
Reviewed in Mexico on October 4, 2021
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Löwe
5.0 out of 5 stars ⭐️⭐️⭐️⭐️⭐️
Reviewed in Germany on November 2, 2023
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
Dariusz Darowny
5.0 out of 5 stars Good stuff
Reviewed in Canada on November 7, 2023
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
ALFREDO
5.0 out of 5 stars Buenisimo
Reviewed in Spain on April 7, 2022
Size: 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 LVerified Purchase
One person found this helpful
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