Marineland C-Series Canister Filter Bio-Balls PC 160-360 90 BioBalls Saltwater Maxing out at around 4

Maxing out at around 4 or 5 inches

Contains phosphate buffers and conditioning agents

Powder will dissolve in system over time

Completely equipped with original

Perform a 30-50% water change weekly for best results

Marineland C-Series Canister Filter Bio-Balls PC 160-360 90 BioBalls Saltwater Maxing out at around 4Marineland Bio Filter Balls provide a larger, multi faceted biological filtration area to help support the growth of beneficial Bio Spira bacteria. These filtration balls fit all Marineland C Series Canister Filters. Biological filtration is vital to maintaining a clean and healthy aquatic environment by utilizing aerobic bacteria to eliminate toxic ammonia and nitrite. For effective biological filtration, three dimensional surfaces are needed to