Hel-X Biomedia has an extremely large protected settlement surface (800m²/1000 liter) that allows beneficial bacteria to grow and thrive. The material is designed to stop floating as soon as it reaches a certain level of bacteria colonization. This is replacement media for the main filter unit of the BioMaster. It is best to only replace the Biomedia when you do a complete tank restart as to not disturb the beneficial biological load. The Hel-X 13 Biomedia includes one replacement unit of 0.3 gallons of Hel-X Biomedia for the BioMaster Filter series. Hel-X has an extremely large protected settlement surface (800m²/1000 liter) that allows beneficial bacteria to grow and thrive. The material is designed to stop floating as soon as it reaches a certain level of bacteria colonization This is replacement media for the main filter unit of the BioMaster Replace your Biomedia only when completing a complete tank restart as to not disturb the beneficial biological load Hel-X 13 Biomedia is replacement media for the BioMaster 250, BioMaster Thermo 250, BioMaster 350, BioMaster Thermo 350, BioMaster 600, and BioMaster Thermo 600Â
