Eshopps AEO19070 Square Foam Aquarium Filter, Large

Mechanical Filter Sponge for Zoo Med's 501 External Filter. Zoo Med's Mechanical Filter Sponge is the first line of defense in removing dirt and floating debris from your terrarium or aquarium. Grabs particulates; Removes debris.

• Mechanical Filter Sponge for Zoo Med's 501 External Filter
• Grabs particulates
• Removes debris
• Just rinse and drop in