Seachem Matrix Carbon Cages Matrix is sufficiently large that

Matrix is sufficiently large that no filter bag should be required for most applications

allowing for better dispersal of heated water through the aquarium

this fish will add a bold and vibrant look to your aquarium

Spiky moss does best on vertical surfaces where the branched shoots will show

trace elements and other nutrients

Seachem Matrix Carbon Cages Matrix is sufficiently large thatMatrixCarbon is a truly unique activated carbon. It is formed as a spherical bead for optimum hydrodynamics, and will not pack. It permits maximum water flow and contact with its high density of macroporous binding sites. MatrixCarbon has a very low ash content as indicated by its minimal impact on pH. KEY FEATURES: High efficiency spherical carbon Very little impact on pH due to low ash content Lowest leachable phosphate level on market High removal