An aquarium filter media that helps clean your water naturally and cultivate beneficial bacteria with these polypropylene biological beads. Ideal for fresh or salted water. larger capacity than most biological filter media, reduced and controls ammonia and harmful nitrates. 56 mm in diameter, from Black color, about 100 per bag. These plastic bio-balls are an excellent support for all types of filters. Made of high quality plastic and organic sponge, organic -Ponge inside provide more surface, can provide an anaerobic environment. Size: 100pcs, 56mm Features: Color: Black Material: PVC Size: 56mm diameter Package Included: 100pcs Organic Media Balls Aquarium Filter
