Review on 🐠 Seachem Matrix: Ultra-Effective Aquarium Filter Media, 4 L / 1 gal. by Kitty Jenkins

Check what you get as soon as you get it! I bought a 4 liter reservoir for my SunSun 303b and that's what I got! It looks like a small cesspool. It's not matrix, it's pumice and bigger. First it was dusted off to make the color look even. After I washed it, it became like this. The matrix will have some color spread, but not that! small pebble like material that appears rough all around. None of the pieces floated like pumice, and the entire container weighed 7.5 pounds dry versus the 3.3 pounds listed on the container. Even if you add 1 lb to the container (which weighs less) you get 4.3 lbs. No, somewhere around 7.5 pounds. It's back!