100pcs New Portable Plastic Aquarium Pond Balls Biochemical Balls For Pond Reef Aquarium

• Material: Plastic Aquarium Pond Balls
• Diameter:About 26mm
• Specially designed for aquarium and pond filter media, it can cultivates nitrifying bacteria.
• Promotes gas exchange, increases dissolved oxygen level and removes harmful gases, ensure the filtration system operates at optimum performance.

Material: Plastic Aquarium Pond BallsOEM