NEWA Aqua BIOGLOBE are polypropylene balls with a unique structure, which make them reduce in diameter without affecting water flow, guaranteeing effective biological filtering. A practical, re-sealable, water-proof container, which keeps the material totally fresh until use. NEWA Aqua BIOGLOBLE can be used in middle-size and big size internal filters, canister filters and trickling filters. It is non-toxic. It can be combined with any kind of filtering material.