Plastic Bio-Ball *50 balls in bag*

Plastic bio-balls are compact filtration media designed to establish and maintain beneficial bacteria colonies in your aquarium. Each 1.5-inch ball features a pegged surface that provides 22.7 square inches of colonization area, effectively processing ammonia and nitrites as water flows through. Made from durable USA-manufactured polypropylene, these balls resist brittleness and degradation. Sold by the bag (50 count) or cubic foot, they require minimal maintenance—simply rinse gently during water changes without scrubbing to preserve the bacterial biofilm. With proper care, bio-balls deliver years of reliable biological filtration.