Aquarium 4 CM Air Stone Disc Bubble Diffuser Clearing Tool for Air Pumps, Aquariums, Buckets, Small Ponds, Pack of 4

Medium Bubbles: The air stone disc produces dense, abundant bubbles. An excellent way to increase oxygen solubility in your aquarium and enliven aquatic life.Model: ASD-040; Jet Volume: 2 L/min; Recommended Air Pump Power: 2W - 4W; Standard Air Tube ID: 0.5cm. Suitable for use in aquariums, fish tanks, and small ponds.Reliable Material: Made of mineral material and sintered at high temperature. Ideal for aeration in a DWC tank. Helps keep fish or roots healthy.Stable in Water: Each disc measures 4cm D x 1.8cm H and weighs 28.3g. Its round, flat shape allows it to always sink to the bottom and remain stable in the tank.Easy to Use: Soak the stone completely in water for 1 hour before use. Clean it regularly with a brush as it gets dirty after weeks or months of use.