This kit contains all the bits and pieces you need to aerate an aquarium. Just add an Air pump and you will have bubbles galore.
Silicone Airline Tube 5 metres
Airline Check Valve
Airline T-Joint (black)
Airline Control Valve (black)
Airline T-Joint (clear)
Air Stone 1 inch
Check Valve - This is a one-way valve to stop water from flowing back into your air pump. Take the valve and blow through it - if air can pass through the device then attach the tube on that side to the tube coming from your air source.
Airline Control Valve - Twist the tap until the desired amount of bubbles is achieved. It can also be used to balance airflow when multiple airstones are used from the one air pump.