Seachem Matrix Bio Media 250ml

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.

Dusty at first. Give it a good rinse, pop it in your filter, and youre ready to go!

This is approx. 10mm pieces of pumice which is one type of volcanic rock mined in western USA states. If you live in those areas it’s very inexpensive, but living in eastern areas of USA, shipping can be extremely cost-prohibitive. I use pumice for my succulents (I have amassed an extremely large collection—hundreds). I order it in 3-gallon bags from General Pumice for around $30–the majority of that cost is shipping which is included in the price. That same 3-gallon bag would cost approx. $6 if I lived closer to where it is mined. It comes in a variety of forms—almost powdered tiny granules for making your own DIY exfoliating products (just add it to your body or face wash and viola!) and many other sizes and forms. So if you have a lot of tanks, this will save you a lot of money. I’m not affiliated with the company in any way; I’m just a grateful and loyal customer. In my opinion, these tiny jars are a huge rip-off. It’s a great product, just exorbitantly over priced.

I had ceramic beads before but these things seem to work faster than the beads. Test results changed in just 1 week on my aquarium.

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.

Bottle is extremely small. I thought I was getting a normal at least 16 oz bottle. This product isn’t worth the time or value to even order. Won’t do this again. Fool me once “shame on you.” Fool me twice “SHAME ON ME”

Es tan bueno que espero 4 libras que compre espero me regalen una muestra gratis de algo que manejen

I used since longtime looks like doing nothing. waste of time money and space in filter.

Still new to this product.

Ive tried them all. Nothing compares. This is not your every day pumice. Well worth the price.