Hailea V30 series Air Pump If you wish to run several air stones from one main air pump to aerate a large amount of water, you will need to use a Hailea V Series Air Pump. Hailea V Series air pumps are manufactured to a very high standard and they work extremely well at delivering plenty of bubbles into your water, to provide higher oxygen levels. These are also great for large hydroponic tanks and also for large aquariums to maintain a regular supply of fresh oxygen into the water to keep your fish alive. Hailea V Series air pumps are metal cased for quiet running and they have rubber feet fitted to prevent any vibration on the surface they are placed on. These air pumps are designed to run several air stones or air curtains. Air Flow & Power Rating V30 Air Pump 6 Outlet – 30 l/pm – 25 watt.