LTWHOME Bio Sponge Fit for Penn Plax Cascade 300 Internal Filter Replacement Cartridges(Pack of 12) Pack include: 20pcs

Pack include: 20pcs

Medium Foam x 1

These Poly pads to compatible For the Juwel Standard / BioFlow 6

18 inches(Inner hole Diameter)

Custom designed and manufactured for the Fluval 204

LTWHOME Bio Sponge Fit for Penn Plax Cascade 300 Internal Filter Replacement Cartridges(Pack of 12) Pack include: 20pcsPacking include: 12pcs bio sponge Change every 3 4 weeks Custom designed and manufactured for Penn Plax Cascade 300 Internal Filter Optimizes the colonization of beneficial aerobic bacteria removes ammonia and nitrites keeping your aquarium clean and healthy This is not a Penn Plax product and is not covered under any Penn Plax manufacturer's warranty. The Penn Plax brand names and logos are the registered trademarks of their respective owners. Any