Zoo Med Mechanical & Bio Replacement Sponge, 2 Count

Refresh your turtle’s tank with the Zoo Med Mechanical & Bio Replacement Sponge. This replacement sponge combo pack includes two replacement mechanical sponges and two replacement biological sponges. The mechanical sponge works to remove debris from your tank, while the biological sponge helps maintain beneficial bacteria. Designed for use with Zoo Med’s 318 filter or 316 filter (each sold separately).