Biochemical sponge materials: Made of food grade materials, absolutely safe and easy to clean, and the water tank is 75 liters. Biochemical sponge: provide excellent biofiltering effect, noiseless during operation, keep water circulation clean. Size: Deep 4.8cm x Height 7.8cm, the inside diameter of the sponge: 1.5cm; the original sponge, the replacement product is very suitable for sponge filters. The replacement sponge helps to improve the biological load capacity and reduce the maintenance, to increase oxygen content, to provide the perfect place for bacterial resale, helping to keep the aquarium clean. large biochemical sponge for path fish, chips , goldfish, young fish, shrimp, small fish, breeding aquarium; suggestion: replace every 5-6 months. Quantity: 4pcs
