3cm Thick Biochemical Filter Sponge for Aquarium

The 3 cm thick Biochemical Filter Sponge provides biological filtration for your aquarium, helping to stabilize water quality and improve oxygen solubility. It operates quietly with good permeability and is easy to clean. This white sponge is a versatile filter sponge accessory for your tank.Specifications Product name: Aquarium Biochemical Sponge Color: White Thickness: 3 cm Available sizes: 100 x 20 x 3 cm, 100 x 12 x 3 cm, 50 x 12 x 3 cm, 50 x 50 x 3 cm, 100 x 30 x 3 cm, 100 x 50 x 3 cm, 120