The Elite Ultra 5-way air control valve allows you to run up to 5 air-driven products at once. Each valve has a flow adjuster which enables you to regulate air output to each devise. The valve is leak-proof and suitable for fresh or saltwater aquariums. The valve can easily be hung on all standard aquariums. Other Elite Ultra air control valves available: -A1178 Elite Ultra 2-way air control valve -A1179 Elite Ultra 3-way air control valve -A1180 Elite Ultra 4-way air control valve