Features 1. Replacement of sink filter element: 6 small filter elements, size: 3.54 x 2.76 inches. 2. Fourth level filtration: The filter adopts a dense double-sided mesh, and the thicker the mesh, the better the filtration effect. Super active cardboard boxes replace ordinary cardboard boxes, and processed zeolites are added to effectively filter and absorb impurities in water, maintain a clean water source, and provide a healthy growth environment for fish. 3. Zeolite efficacy: It can adsorb harmful components such as ammonia and heavy metals in water. Effectively balance the pH value of the water body and achieve a stable water state. Zeolite can improve the fertilization efficiency of aquatic plants, making them and nitrifying bacterias grow faster, making life more comfortable and healthy. 4. Quick installation: Close and remove the used filter cartridge, rinse the new filter cartridge with cool water or water in an aquarium to remove dust. After flushing, insert the filter cartridge into the flushing chamber and ensure that the filter cartridge is fully inserted into the flushing chamber. Specification Material: Cloth Color: Grey Size: 9 x 7 x 1 cm Weight: 95 g Package Include: 6x Filter Cartridge