---
product_id: 57473327
title: "Matrix Bio Media, 4 Litre"
brand: "seachem"
price: "€ 161.05"
currency: EUR
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.at/products/57473327-matrix-bio-media-4-litre
store_origin: AT
region: Austria
---

# High surface area for beneficial bacteria Supports aerobic & anaerobic bacteria Controls ammonia, nitrite & nitrate Matrix Bio Media, 4 Litre

**Brand:** seachem
**Price:** € 161.05
**Availability:** ✅ In Stock

## Summary

> ♻️ Transform your aquarium into a thriving aquatic paradise!

## Quick Answers

- **What is this?** Matrix Bio Media, 4 Litre by seachem
- **How much does it cost?** € 161.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/57473327-matrix-bio-media-4-litre)

## Best For

- seachem enthusiasts

## Why This Product

- Trusted seachem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Triple-Toxin Control:** Effectively eliminates ammonia, nitrite, and nitrate to keep your aquatic environment pristine.
- • **Optimized Bacterial Habitat:** Engineered to support both aerobic and anaerobic bacteria, ensuring balanced ecosystem health.
- • **Ultimate Biofiltration Power:** Maximize water clarity with 4L of premium bio media designed for superior filtration.
- • **Scientifically Proven Formula:** Trusted by thousands with a 4.7-star rating, made in the USA for quality assurance.
- • **Versatile Filter Compatibility:** Fits seamlessly into any filter type, including canister filters, for hassle-free setup.

## Overview

Seachem Matrix Bio Media is a 4-litre granular filtration media designed to provide high-capacity biofiltration by supporting beneficial aerobic and anaerobic bacteria. It effectively controls harmful ammonia, nitrite, and nitrate levels, fits all filter types including canisters, and is trusted by over 7,000 users with a 4.7-star rating.

## Description

Product Description Seachem Matrix 4Ltr Directions 1. Rinse the Matrix media before use. 2. Place the Matrix media in any kind of filter. 3. For every 25 gallons of water, use 250 milliliters of Matrix media. 4. Matrix media removes ammonia, nitrite, and nitrate from the water. 5. Matrix media is effective in canister filters and provides a large surface area for beneficial bacteria. Box Contains water treatment

Review: Phenomenal biological media—a must-have for a healthy tank! - I bought this Seachem Matrix to add to my main Fluval 307 external filter, and it has been absolutely brilliant. It is highly recommended in the fishkeeping world for a reason, and now I completely see why. The biggest benefit of this stuff is its incredible surface area. Unlike standard ceramic rings that are only smooth on the outside, Matrix is packed with thousands of microscopic internal pores. This means it provides an absolute massive amount of space for beneficial bacteria to colonize and grow. It handles ammonia and nitrite like an absolute champion, keeping the water parameters perfectly stable and safe. Plus, because of its unique structure, it even supports anaerobic bacteria deep inside the pores, which helps knock down nitrate levels too—something very few other media can actually do. It doesn't clog up, it doesn't degrade or wear away over time, and it fits perfectly into the Fluval baskets without restricting the water flow at all. It honestly takes your filtration to a whole new level. If you want a healthy ecosystem and crystal-clear water, this is the best upgrade you can give your filter. Easily a 5-star product!
Review: Platinum Standard Bio Media! - I use Matrix across all four of my aquariums, and it’s become my “buy once, trust always” biological media. It’s reliable, easy to use, and delivers the same steady performance no matter which filter I drop it into—canister, HOB, internal, or a sump basket. What I notice in day‑to‑day use The fish stay happy and the water stays stable. Matrix gives beneficial bacteria tons of room to colonise, which helps process waste efficiently and keeps parameters on an even keel. It’s properly “set and forget.” Once it’s in place, I don’t have to babysit it or swap it out every few months. A quick rinse in old tank water during maintenance is all it usually needs. It doesn’t crumble or compact like some ceramic rings. The pieces keep their shape, so flow through the media stays consistent. Ease of setup Rinse it once to remove any dust, pop it into a media bag, and place it after your mechanical stage (sponges/floss). That way, debris is caught before it reaches the Matrix, and the bacteria get clean, well‑oxygenated water. It works in small and large amounts—handy if you’re seeding a new tank or boosting capacity in an established one. Maintenance & longevity I only swish it in tank water when I’m doing a water change. No fancy routines or chemicals required. Because it lasts for years, it’s great value. You’re not constantly replacing media, so the cost evens out quickly—especially if you’re running multiple tanks like I am. Performance tips from my setups Don’t overpack the media bag; allow water to flow through freely. Keep a decent mechanical pre‑filter ahead of it. Less gunk on the Matrix means healthier bacterial colonies and less cleaning for you. It’s not a substitute for water changes, but it makes the system far more forgiving between services. Verdict Matrix is my go‑to for a reason: consistent results, low effort, and excellent durability. After trying plenty of alternatives, this is the one I trust across all four aquariums. For me, it’s the platinum standard of biological media—simple, effective, and worth every penny.

## Features

- Use biocides safely. Always read the label and product information before use.
- High capacity bio filtration
- Controls ammonia, nitrite, and nitrate
- Supports aerobic and anaerobic bacteria species

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006JLVU8 |
| Allergen Information | Gluten Free |
| Best Sellers Rank | 5,802 in Pet Supplies ( See Top 100 in Pet Supplies ) 63 in Aquarium Water Treatments |
| Brand | Seachem |
| Brand Name | Seachem |
| Country Of Origin | USA |
| Customer Reviews | 4.7 out of 5 stars 7,005 Reviews |
| Global Trade Identification Number | 00000116011907 |
| Item Form | Granules |
| Item Type Name | Filter Accessories |
| Item Weight | 2.31 kg |
| Item form | Granules |
| Item weight | 2.31 kg |
| Liquid Volume | 4 Litres |
| Liquid volume | 4 Litres |
| Manufacturer | Seachem |
| Manufacturer Part Number | 075423 |
| Model Number | 001051 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 000116091107 000116011907 |
| Unit Count | 4000.0 millilitre |
| Unit count | 4000.0 millilitre |

## Product Details

- **Brand:** Seachem
- **Item form:** Granules
- **Item weight:** 2.31 kg
- **Liquid volume:** 4 Litres
- **Number of Packs:** 1

## Images

![Matrix Bio Media, 4 Litre - Image 1](https://m.media-amazon.com/images/I/61osvt6MSjL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Phenomenal biological media—a must-have for a healthy tank!
*by E***Z on 13 July 2026*

I bought this Seachem Matrix to add to my main Fluval 307 external filter, and it has been absolutely brilliant. It is highly recommended in the fishkeeping world for a reason, and now I completely see why. The biggest benefit of this stuff is its incredible surface area. Unlike standard ceramic rings that are only smooth on the outside, Matrix is packed with thousands of microscopic internal pores. This means it provides an absolute massive amount of space for beneficial bacteria to colonize and grow. It handles ammonia and nitrite like an absolute champion, keeping the water parameters perfectly stable and safe. Plus, because of its unique structure, it even supports anaerobic bacteria deep inside the pores, which helps knock down nitrate levels too—something very few other media can actually do. It doesn't clog up, it doesn't degrade or wear away over time, and it fits perfectly into the Fluval baskets without restricting the water flow at all. It honestly takes your filtration to a whole new level. If you want a healthy ecosystem and crystal-clear water, this is the best upgrade you can give your filter. Easily a 5-star product!

### ⭐⭐⭐⭐⭐ Platinum Standard Bio Media!
*by P***O on 15 January 2026*

I use Matrix across all four of my aquariums, and it’s become my “buy once, trust always” biological media. It’s reliable, easy to use, and delivers the same steady performance no matter which filter I drop it into—canister, HOB, internal, or a sump basket. What I notice in day‑to‑day use The fish stay happy and the water stays stable. Matrix gives beneficial bacteria tons of room to colonise, which helps process waste efficiently and keeps parameters on an even keel. It’s properly “set and forget.” Once it’s in place, I don’t have to babysit it or swap it out every few months. A quick rinse in old tank water during maintenance is all it usually needs. It doesn’t crumble or compact like some ceramic rings. The pieces keep their shape, so flow through the media stays consistent. Ease of setup Rinse it once to remove any dust, pop it into a media bag, and place it after your mechanical stage (sponges/floss). That way, debris is caught before it reaches the Matrix, and the bacteria get clean, well‑oxygenated water. It works in small and large amounts—handy if you’re seeding a new tank or boosting capacity in an established one. Maintenance & longevity I only swish it in tank water when I’m doing a water change. No fancy routines or chemicals required. Because it lasts for years, it’s great value. You’re not constantly replacing media, so the cost evens out quickly—especially if you’re running multiple tanks like I am. Performance tips from my setups Don’t overpack the media bag; allow water to flow through freely. Keep a decent mechanical pre‑filter ahead of it. Less gunk on the Matrix means healthier bacterial colonies and less cleaning for you. It’s not a substitute for water changes, but it makes the system far more forgiving between services. Verdict Matrix is my go‑to for a reason: consistent results, low effort, and excellent durability. After trying plenty of alternatives, this is the one I trust across all four aquariums. For me, it’s the platinum standard of biological media—simple, effective, and worth every penny.

### ⭐⭐⭐⭐⭐ It really works if used right
*by T***Y on 22 May 2025*

This stuff has been a game changer in my setup. I was weekly having to do around a 50% water change to keep my nitrates in check as they were nudging up to 40ppm sometimes. My tank is a well stocked freshwater mostly American Cichlid tank. I have been running 1 litre of this stuff for the last 3 months and my weekly nitrate check is now more like 5ppm. My last weekly water change was more like 20% and still nitrates have stayed this low. I run it in a sump in the last section with the return pump and heaters, I was careful to make sure the flow is within the range this stuff is meant to be effective. I'm so impressed that I've put another litre in, it does take sometime to get to work but excited to see if it will go even lower.

## Frequently Bought Together

- Seachem Matrix, 4 L / 1 gal.
- Fluval FX5 Fine Filter Water Polishing Pad - 3-Pack
- Seachem Indoor Purigen Organic Filtration Resin - Fresh and Saltwater 100 ml

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-10-16*