Seachem Matrix Bio Media 250ml

I have only had this for a month or two, but after destroying our tanks eco system during an attempt to get rid of snails, it has been amazing. For several months, the ecosystem was struggling to cycle correctly. We lost several fish, one at a time, until this purchase. Since adding the Seachem Matrix, the water is clearer, the fish are more lively and colorful. Overall its a great product and maintenance is easy, just rinse rocks off and reuse.

Awesome Product! First time using seachem and I now see why everyone raves about it!

Love it nice groves for beneficial bacteria to grow, Nice size fits well in canister , but you might wanna get the next size bottle up not much comes in the small.

Best filtration media you can use IMO (and the research seems to back this statement up). Particularly if you have a canister filter (because of the anaerobic possibilities), although it works fine with a HOB filter so long as it has space to fit enough of this rather large media.

My African cichlids feel like they are home

The bio-medium is little volcanic-type rocks, large pea size. I’m using about half the container (250ml, so about 125ml). I’ve put the rocks into a bag, purchased separately, that fits my filter. My tank is 15 gallons and my filter runs at 200 gallons an hour (sounds crazy) so the rocks get a lot of flow. When I switched to this brand, I left my old bio-medium in the tank for about a week, so the bacteria would populate the new medium. My ammonia and nitrite are running at zero. I rinse the bag of rocks about once a week, scrubbing it between my hands to clear the algae. The rocks don’t get clogged, so I haven’t had to change them out for fresh ones. It takes time to build the bacteria population, and it’s important to keep something in your aquarium where the little creatures can live. In the photo, I’ve layered a bag of eggshells on top of the Matrix. (The eggshells raise the pH.)

Trying to keep my goldfish tank crystal clear has been a challenge in my slightly overstocked tank dispite keeping NO3 and NO2 on the high side of normal. I have been doing full water changes every month and have tried variety of filtration medias and charcoal products. I decided to try this in my Tetra HOB fiter. I placed the rocks in the open spaces of the plastic bio filter. You could see it improving the water clarity day by day until the water was clear.

I bought this product after using three or four different brands/kinds of media and this is by far the best. The pebbles are larger than I expected, but the bottle says that it never needs to be replaced and that it can be rinsed without depleting all of the bacteria culture. I used MicroBacter 7 for two weeks to culture the media and I have had absolutely no problems with my nitrate or nitrite levels. When it gets dirty I rinse it with cold tap water and it does not seem to affect it at all - it still works well to reduce toxins even after rinsing. Highly recommended.

This is the best Biological Filtration I have ever used. It cleared my 65 gallon tank very fast and an added bonus, you don’t have to replace it. I have used a few different brands ceramic filter media in the past and as is wore out it would leave a cloudy film on the water surface in the tank. I purchased three 250ml for my fluval FX4 canister filter and it’s working like a charm!

as expected