Marineland Bio-Filter Balls, Supports Biological aquarium Filtration, Fits All C-Series Canister Filters 90 Count (Pack of 1)

BIO-FILTER BALLS: Provide a larger, multi-faceted area for the growth of beneficial Bio-Spira bacteria. FOR BIOLOGICAL FILTRATION: An important component of maintaining a clean and healthy aquatic environment. COMPATIBILITY: Fits all Marineland C-Series Canister Filters – Rite-Size S and T. QUANTITY: Contains 90 Marineland Bio-Filter Balls. MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.