ITEM NAME:4.6 inchAquarium Water Biochemical Filter Sponge Filter Foam Black G4A2 4.6 inchAquarium Water Biochemical Filter Sponge Filter Foam Black G4A2 Provides biological and chemical filtering and increases the solubility of oxygen in the aquarium and fish tank. Dense honeycomb shape makes it effective to avoid backwater and reduce the mortality of the fish. You can cut the size as you need it. Can be used again after cleaning. Product name: Biochemical filter sponge Material: sponge Color: Black Size: 11.8 x 6cm Hole diameter: 11mm Weight: 10g Package Content: 1 x sponges biochemical filter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
