Pawfly Aquarium 4 Inch Air Stone | Dense Bubble Diffuser for Fish Tanks & Ponds

The Pawfly Aquarium 4 Inch Air Stone is a mineral-based diffuser designed for aquariums, ponds, and DWC systems. It produces dense bubbles, increasing oxygen levels efficiently, supporting healthy aquatic life. Made of sintered mineral material, it causes no harm to fish or roots, ensuring safe operation. Weighing 7 oz and measuring 4.1" in diameter, it sinks easily and stays stable with three suction cups. To use, soak in water for 1 hour before installation and clean regularly to prevent clogging. Ideal for tanks of 10-60 gallons, it is compatible with air pumps over 4W, jetting 12 L/min, and fitting tubing of 3/16