| Brand | Penn-Plax |
|---|---|
| Type | Foam/Sponge Filter |
| Tank Capacity | 20 gal. |
| Custom Bundle | Set of 2 |
| Water Type | All Water Types |
| Model | Cascade 300 |
| MPN | CIF1FI |
| Modified Item | No |
| Filter Location | Internal |
| UPC | 030172017599 |
Check the listing for details. 2- Penn-Plax Replacement Bio-Sponge Fits Cascade 300 Internal Filter CAT. #CIF1. Condition: New. Listed at 11.97 USD. This allows for the colony of anaerobic bacteria to remain intact with the Bio-Sponge. 75” (D) x 1. This allows for the colony of anaerobic bacteria to remain intact within the Bio-Sponge. Reptology Internal Filter CAT.