Marineland Filter Foam C360 2pc

Marineland® Biological and Mechanical Filtration Filter Foam provides a large surface area for trapping particulate debris and enhances biological filtration. The filter foam can be rinsed and reused once every three weeks for a total of nine weeks. Remember to change your filter cartridge once a month or when you see a reduction in water flow, as well as change 25% of the water monthly.