Matrix, 2 L / 67.6 oz.

Working well to keep my water clear and my fish healthy!

Uuuufff q decir de este matrix súper al inicio leí barrios comentarios que el matrix podría venir mezclado con otro tipo de piedra y pues mi opinión es otra muy bueno este matrix y muy poroso así podré alojar bastantes bacterias en mi filtro

This stuff is literally amazing. I have good success with any bio media I use however I have some Matrix bio media in every single filter no matter what because the results speak for themselves. Keeps your water quality perfect! Love this stuff!!!

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.

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!

I have been using Sechem matrix for about two years now. It is in my opinion by far the best available bio material in the home aquarium hobby. I’ve never had any issues with mini cycles or loss of cycle to any degree since using. You get way more surface area for bacteria to colonize than any other media I have used. I received my second bottle of matrix from amazon today (other bottles have been purchased through local fish stores). After reading some reviews on Amazon I see some people talking about having garden gravel in their container and being concerned that there is no seal on the bottle. I gave a quick look at what I received today and see no such issue. There was indeed no seal of any kind, but the product is Seafhem Matrix for sure. I honestly don’t recall whether or not the bottles I purchased from the LFS had a seal either. But what I see upon first glance into my recently received bottle is nothing but genuine sechem Matrix. I haven’t dumped the container to check the lower portion, but I will be using this in the next week or so when setting up another filter. If I suspect something a foul I will return to adjust my review, but having purchased this from Amazon previously with no issue I am sure this is fine as well. I have included two pictures for reference.

My matrix arrived 98% original, but Seachem listen to their consumers in this type of things, use the security seals, I give it 4 stars because everything arrived too well, only about 6 or 8 stones were not MATRIX, but Seachem listen to their consumers and don't be STUPID!!!Good afternoon.