Biochemical Aquarium Filter Sponge – Bio Foam Media for Fish Tank Air Pumps

Biochemical Aquarium Filter Sponge media provides biological filtration for fish tanks and is designed as a replacement for cotton in XY-180, XY-280, and XY-380 sponge filters. It’s built for use with aquarium air pumps to help maintain stable water quality.

• Biological filtration supports beneficial bacteria, helping to stabilize water quality during setup, changes, or after feeding spikes.
• Enhances oxygen diffusion in the water, supporting healthier fish and a more effective biofilter process.
• Quiet operation with good permeability and easy cleaning, reducing maintenance time and effort.
• Available in five sizes to fit a range of sponge-filter models and configurations, making replacement simple without altering your setup.

• Material: Biochemical sponge (bio foam)
• Color: Black
• Sizes (each sponge): 11.5 cm × 11.2 cm (large); 11.5 cm × 6.5 cm (medium); 7 cm × 6.5 cm (small); 5.5 cm × 4.4 cm; 5.6 cm × 8 cm
• Compatibility: Replacement for aquarium filter cotton in XY-180, XY-280, XY-380, XY-2835, XY-2836
• Package options: 1 piece, 2 pieces, or 5 pieces per order
• Setup tips: Soak the sponge in aquarium water for 5 minutes before first use to aid nitrifying bacteria colonization; rinse with room-temperature aquarium water (avoid hot water); connect to an air pump during operation
• Origin: Mainland China