Rite-Size Emperor Power Filter Cartridge Size E (4 Per Pack)

The Rite-Size Emperor Power Filter Cartridge comes in size E and includes 4 cartridges per box. These cartridges contain both mechanical and chemical filtration for a more thorough and convenient cleaning process. The double thick poly-fiber pad mechanically filters water, trapping debris and waste particles, while Marineland's Black Diamond Premium Activated Carbon chemically filters water. These cartridges are complete filtration units and do not require any additional materials, though additional carbon can be added if there is room in the filter box. The cartridges have approximate dimensions of 4 x 6 x 9.5 inches, making them suitable for larger tanks. Overall, customers are satisfied with this product. The filters are exactly what customers order and are shipped on time. Some customers have reported that the cardboard box was smashed during shipping, but this did not affect the product. Customers have tried other filtration systems but found that the Rite-Size Emperor Power Filter Cartridge with bio wheels is the best. Customers appreciate the convenience of having the filters delivered to their homes and find it to be cheaper than buying them at pet stores. Customers have reported that the filters last much longer than the recommended change schedule, and they can be reused by rinsing with tank water until they fall apart. While it is possible to make your own filter, customers find that these cartridges are a great "lazy man's" solution. These filters are a perfect fit for a 55-gallon tank and are just as described.