Seachem Matrix Carbon Heating & Basking Watch out for products that

Watch out for products that claim to be regenerable with a brine solution

or strontium which usually tend to precipitate with increasing alkalinity

thiamine mononitrate

Key Features :

Seachem Matrix Carbon Heating & Basking Watch out for products thatKey Features Net Weight: 200 g High efficiency spherical carbon Very little impact on pH due to low ash content Lowest leachable phosphate level on market High removal capacity; large surface area Marine and freshwater Description MatrixCarbon 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.