Bio Balls are used for Filtration in your sump or canister filter. Good bacteria live and breed in and on the bio balls which break down all the nasties in tank water. Filters that only run sponges do not offer the same level of filtration as filters with mixed media sp therefore these are a must for any serious fish keeper.
- Type: Filtration Media
- Item Type: Canister Filter Media or Sump Media
- Diameter of bio ball: 16mm/26mm
- Quantity: 10pcs/pack
- Color: Black
- Net weight: 20g(10pcs)
- Use for : Aquarium Pond Fish Tank