Quickun 2 Inch Updated Crazy Air Stone Cylinerr Bubble Plus Ball Diffuser Aquarium Fish Tank Hydroponics Pump Airstones Diffuser 3/16In 5/16In Hose Id

Package5 Pcs Cylinder Air Stones. ParameterFits for 3/16(4 mm)OR 5/16(8mm) inner diameter tube. Color: Grey. Size: 2x 2 (H x W). Net Weight: 3.84oz/Pcs 19.3oz/Package. Specifications: Jetting Volume: 5 L/min Suitable for 20-40 fish tank FeatureAbundant Tiny Bubble: This crazy air stone will create much more abundant cascade of tiny bubbles than you can ever imagine! Notice for useBEFORE USE: You have to soak it in water for about 6 hours before connecting to an Air pump more than 4 W to run it. MaintainClean regularly by a brush as they get clogged after weeks or months of usage. Safe Washable & Durable material keeps fish healthy and safe.