Quiet to unleash! This air pump is known for its quietness. The air volume can be adjusted when the dial is turned to make this pump very easy to use. Aquarium SSPP-2S Air Pump for Aquarium 23.6 - 47.2 inches (60 - 120 cm) with Bonus Aquarium SSPP-2S (Air Volume Dial Adjustable); Compatible Aquarium Size: 23.6 - 47.2 inches (60 - 120 cm); Features: The “Aquarium” series is said to be quiet. The dial allows you to adjust the amount of air, and the specially designed sound-silent chamber smoothes the air and eliminates unpleasant noise, and is made to be quieter up to 1/3 of the conventional model (compared to our company). All models come with a ring to hang the hook, and you can even increase the silence by hanging it. Uses ozone compatible diagram. Replacement parts are shaped to replace the whole unit, making it easy to replace. Quantity: 1 piece; Specifications: Voltage: 100 V; Power Consumption: 50 Hz; 4.5 W/60 Hz; 3.6 W; Maximum Discharge Volume: 3,500 cc/minute (depth: 25 cm): Maximum 3,000 cc); Pressure: 16 KPa Size (approximate): Width 3.1 x Depth 19.5 inches (6 x Height 6 inches (49.5 cm); How to use: Air volume can be adjusted when you turn the dial Connect the air tube of the filter to the outlet of the main unit. Please install the main unit above the aquarium. Plug the plug of the main unit into an outlet. Acrylic Joint Clear 4 Types Set (Total 4 Pieces) Set Contents: Acrylic Joint Clear (0.2 inch (6 mm) Silicone/0.2 inch (6 mm) Silicone), Compatible Tubes: Outer Diameter 0.2 inch (6 mm) Silicone Tube (Both Sides), Outer Diameter 0.2 inch (6 mm) Pressure Resistant Tube (One Side), Acrylic Joint Clear (6 mm / 6 mm Pressure Resistant) Compatible Tubes for Tubes : Outer diameter 0.2 inch (6 mm). Pressure Tube (both sides): Acrylic Joints: Clear (0.2 inch (6 mm) pressure resistance/3 mm) pressure resistance; Compatible Tube for Tubes: Outer diameter 0.2 inch (6 mm) pressure resistant tube (one side), Outer diameter 0.1 inch (3 mm) pressure resistant tube (one side), Size (approx.) Diameter 0.3 inch (7 mm) x Length 0.8 inch (2 inch (21 inch (21 inch (21 mm) Material: Acrylic. How to use. Use for connecting each compatible tubes. If the tube is not properly installed, heating it with hot water or similar to it will become soft and easy to wear.