Review on VIVOSUN 332 GPH Air Pump - High-Performance 14W 4 Outlet for Aquarium and Hydroponic Systems - Efficient 21L/min Flow Rate by Casey Estrada

So I've seen LOTS of feedback on how noisy these pumps are. Spring. I rolled the dice to see for myself. I can only speak for the "VIVOSUN 332 GPH Air Pump 14W" version, but it is NOT loud at all! In fact, it's slightly quieter than the two Whisper 150s it replaces. And damn, that thing moves air! Cranked it up and my 130 gallon tank looked like a boiling pot! It's nice that this model has an adjustable drive wheel to bring it back when it's that strong. It's still brand new so I can't speak about durability yet, but I'm very happy with the performance of this particular version/model of VIVOSUN. Update April 2020 - No problem! Has been working powerfully and quietly for almost 2 years. I can still highly recommend this pump.