Extremely quiet and powerful air pumps for increasing oxygen levels running airdriven ornaments and operating undergravel filters. Designed in conjunction with leading sound engineers for maximum noise reduction High flow rates of air even in deeper aquariums Modern design and stateoftheart technology Adjustable airflow CE certified TUVGS testedsafety and reliability assured 3 year guarantee Application Place the air pump outside the aquarium away from areas where it may get splashed. Attach a length of standard airline to the outlet and run this into the aquarium. Attach the airline to a TetraTec AS air stone or to an airpowered ornament. It is important to install a TetraTec CV4 checkvalve in the airline to prevent water being drawn into the pump. Use the flowcontrol valve that comes with each APS pump to control the amount of air produced. Always read the instructions carefully before use. The advanced Tetra APS air pump is a quite low noise system thanks to sound-absorbing chambers, stable housing and special vibration-absorbing rubber feet. Each size APS pump is available in either black or white to fit in with most aquarium fish tank setups. The air pumps highly consistent air flow is due to its powerful high quality long lasting diaphragm. Flow control valve included allowing full control over the output strength of the APS air pump and the resulting oxygen / bubbles in your aquarium Pleasantly quiet running, thanks to sound-absorbing chambers Innovative technology, stable housing and special vibration-absorbing rubber feet Highly consistent air flow thanks to powerful, durable membrane Excellent quality and reliability Includes air tap for adjusting the air flow
