Hagen Fluval Biomax Media - 500 Gram
Ideal Bacterial Media
Maximized Internal & External Volume.
Suitable for both freshwater and marine aquariums. The ring size and shape provides an excellent strainer for large particulate wastes when used in the lowest media module.
Over time the biomax pores clog up with non-decomposing waster material, and require replacement every six months to maintain efficient biological activity.