Review on AQUANEAT High-Capacity Aquarium Air Pump for tanks up to 300 gallons - Dual Outlet Oxygen Aerator Pump by Dede Tambagan

I really like this pump. I had 1 20L and 2 10, each with their own pump. I've recently added an additional 20 liters and 10 to my setup. This pump will easily transfer large sponge filters to all five tanks! The valves included in the package simplify the distribution and regulation of airflow. Neither sponge gets full air pressure, so I'm sure I can add a few more tanks to this setup with no problems. Also, THIS THING IS SILENT! With both outputs occupied/closed, I hear the faintest hum (I mean the faintest) when I'm near it. I can't hear anything more than a few feet away. I would definitely recommend this pump to anyone punching through multiple sponges/airfoams.