The Fusion Air Pump 300 has a Fusion plenum; this pressurized volume of air absorbs the sound and makes the Fusion Air Pumps extremely quiet. This unique plenum also regulates the air flow creating a constant powerful output. This patented air pump features an electronic air control knob which creates a quiet and precise air flow.
I like to stock these air pumps as they work well if you ever want to completely dry out an Aquaripure filter for storage. You can let air get pumped through an Aquaripure for a week or so to dry it out after you drain the water from it.