Aqua One Bio Balls - Suit all Canister Filters (300pk) (53017)

Provide high-surface-area media that supports beneficial bacteria and dependable biological filtration performance. Porous structure, plastic biological filter media. These are supplied in the Cf range of canister filters and are frequently lost over time. Also great for trickle filters and any large volume biological filters. • Extremely light weight in any volume • Massive void space so will not block • Use in the bottom of CF canister filters • Work very well as a general use biofilter media • Low Maintenance • Genuine Aqua One spare part We recommend only using Aqua One genuine spare parts in their range of filters