Aquarium Biochemical Sponge Filter with Skimmer for Fish Tanks

This aquarium sponge filter provides biological filtration and oxygenation for fish tanks. It features a biochemical sponge and a skimmer design to help maintain stable water quality.

• Biochemical sponge filter for biological filtration
• Enhances oxygen solubility in aquarium water
• Operates quietly with 360-degree adjustable positioning
• Good permeability and easy to clean
• Includes suction cup for smooth surface attachment
• Filter balls sold separately
• Air pump not included and must be purchased separately
• Soak sponge in aquarium water before use; rinse with room temperature water only