General description The 2-Piece Air Stone Disc Bubble Diffuser is designed to effectively oxygenate fresh and saltwater tanks, ponds, and hydroponic systems. With a size of 4.2 inches, this diffuser creates small micro bubbles (300-500 microns) that enhance water circulation and promote a healthy aquatic environment. Technical specifications Model: ASD108 Size: 4.2 inches Spray Capacity: 12 L/min Maximum Pressure: 0.012 MPa Recommended Pump Power: 4 W - 8 W Compatibility and accessories Includes 3 suction cups to secure the diffuser in place Usage Increased air movement and circulation from the diffuser oxygenate the water, benefiting aquatic life and enhancing the aesthetic of your aquarium.