SeachemMatrix, 4 L / 1 gal.

I have used Seachem Matrix for well over a year now, and I can say for a fact that it is by far the best media out there, and the results I have had using it prove it.Every bio media will give your filter the surface area to grow aerobic beneficial bacteria that convert ammonia and nitrites into nitrates. What's so special about Matrix is that each piece of the bio media is so porous yet dense that there are nooks and crannies in each piece that a special type of beneficial bacteria is able to grow, specifically anaerobic bacteria. This anaerobic bacteria consumes nitrates. This type of beneficial bacteria is one that can only grow in environments that are not oxygenated (which is why the porosity and nooks and crannies Matrix bring to the table are important).I keep African Cichlids (Mbuna specifically), which have a reputation for being some of the most demanding fish when it comes to bio load. I keep the tank stocked moderately, overfiltered, and chalked full of as much Seachem matrix as I can fit. Before switching to Matrix I was using the typical ceramic rings and doing weekly water changes. My Nitrates would get up to 30-40 PPM after 1 week with no ammonia and no nitrites. After switching to Seachem Matrix and giving the anaerobic beneficial bacteria a couple months to establish itself, it is a night and day difference. I test my water weekly. I was shocked to begin seeing a decline in the numbers on my nitrate tests. Probably around the 6 month mark or so, there began to be such a little amount of nitrates that I could skip water changes. I keep everything recorded in a spreadsheet and there was one point that I went 2.5 weeks without a water change and my nitrates were only at 25 PPM, KEEP IN MIND THESE ARE FULL SIZE MBUNA WITH NO PLANTS IN THE TANK. I still do weekly water changes and test my water weekly, but typically there is so little nitrates that it wont even register on a dip test strip and API registers between 0 and 5 PPM. Truly amazing.The proof is in the pudding, Seachem Matrix makes big claims and much like every other Seachem product, it backs them up. 10/10 would recommend, I will never run another bio media in any tank.

Excellent filter media. I used two gallons of this media in my new setup and it helped with my water quality and allowed for the quick addition of fish.

Excellent quality product 👌

This review is meant for both Seachem's Stability and Seachem's Matrix.I helped my son set up his 120 gallon African cichlid tank. We went through about 5 or 6 different filters and settled on an Eheim. From what we had learned from our research on tank setups we had understood that the filter media, once properly colonized, will remove ammonia and nitrites from the water but will not remove nitrates (ammonia gets converted by one kind of bacteria in the filter to nitrites and in turn another kid of bacteria will convert the nitrites into nitrates). The only way to reduce the nitrate levels is by either having live plants or even better, periodic water changes. We were also told that if we have a deep enough substrate then after about 6 months or so, if we get lucky, deep in the substrate will develop a bacterial colony that will help reduce the nitrates.As I continued my research I stumbled on to the Seachem web site. I was impressed by the specs of their Matrix product. It claimed to be able to support bacteria that will eliminate nitrates from the water. Great! Now all I have to do is buy this filter media, wait six months and I'm all set. Not only that, but from what I've read on the Internet, it could take up to two whole months for the ammonia and nitrites eating bacteria to properly develop.Well, luck for me, I found the Stability product. I added both the Matrix filter media and Stability to my setup (Stability needs to be added to the water on a daily basis for one week) and tested the water after one week. I was pleasantly surprised to see that the ammonia and nitrites levels had dropped down to 0! My son was telling me not to bother testing for nitrates because it's guaranteed that they'll be there. I tested anyway and guess what? Zero!This works like magic!

Great product working well for my large aquarium

He estado usando Seachem Matrix en mi acuario tanto de agua dulce como en el marino, y los resultados han sido muy positivos. Este producto actúa como un medio de filtración biológica de alta capacidad, lo que significa que ofrece un amplio espacio para que las bacterias beneficiosas crezcan y ayuden a descomponer compuestos tóxicos como amoníaco, nitritos y nitratos.Desde que empecé a usarlo, he notado una mejora significativa en la calidad del agua y una mayor estabilidad en los parámetros químicos, lo que ha beneficiado la salud de mis peces y corales. Además, el tamaño y la textura del material permiten un buen flujo de agua sin obstruir el filtro.Otra ventaja es que es apto tanto para acuarios marinos como de agua dulce, lo que lo hace muy versátil. La presentación de 1 galón rinde bastante y es fácil de colocar en distintos tipos de filtros.En resumen, recomiendo Seachem Matrix a cualquier aficionado serio del acuariofilia que busque mantener un ambiente limpio y saludable para sus peces. Es una inversión que vale la pena para garantizar un ciclo biológico eficiente.

I am not to sure if this works as well as the manufacturer claims I rarely check my water I watch my fish and the 40 year’s in fish keeping. I originally bought professional bio media on eBay which costed less and worked great and cheaper but I always trusted seachem. I over filter my 75 gallon about 22 times over not an over kill when you have a big bio load meaning the more fish you have the more biological media you need. I have 22 fish in my tank from severums and loaches and polar parrots and a King Kong parrot and a knife fish all are doing great I do a 1/4 gallon water change weekly and use pre filter on one of my canister filter and the other is cleaned every week

Use this in my fx6 canister filter keeps my saltwater tank crystal clear