Description
Accessories Includes: 4 x Return Valve,4 x Control Valve,4 x Air Stone,25 ft Airline Tubing,12 x Connector and 12 x Suction Cup. 3/16″(4mm) Inner Diameter of Airline tube can use for most of Air Pumps. No toxic, clear and flexible. Air stones can be easy driven by Air pumps. Red clear valve can prevent water from back siphoning. Adjusting valve can change the oxygen output into the suitable way for fish tank.
