Penn-Plax Cascade 500/350 GPH Canister Filter Aquarium Bio Sponge Replacement, 2 Pack - size: Cascade 500/350 Replacement Bio-Sponge (Pack of 2)

About this item

• The information below is per-pack only
• Keep your water clean and clear with the replacement bio sponge for use in the Cascade 500 Model CCF1UL and Cascade Elite canister filter models.
• The bio sponge filter removes ammonia and nitrites from your aquarium tank keeping your aquarium clean; healthy; and odor free.
• Perfectly cut to fit into the Cascade 500 filter tray without any gaps which could allow pollutants to re-enter the water.
• Filter sponge optimizes the colonization of beneficial which prevents the water from becoming cloudy and harming fish.
• Genuine Penn Plax replacement cartridge for Cascade 500 models. When used together; the filter and bio sponge provide maximum protection against water pollutants.

Overview

• Is Discontinued By Manufacturer ‏: ‎ No
• Product Dimensions ‏: ‎ 7.5 x 1.5 x 5.5 inches; 2.12 ounces
• Item model number ‏: ‎ CCF129
• Date First Available ‏: ‎ January 23, 2026
• Manufacturer ‏: ‎ Penn Plax
• ASIN ‏: ‎ B0D86YBB9T
• Best Sellers Rank: #21,248 in Pet Supplies (See Top 100 in Pet Supplies)
• Customer Reviews: 4.7 4.7 out of 5 stars (4,424)