Superfish Air Pad Silencer for Air Pumps Superfish Air Pad Silencer for Air Pumps – An air pump is working with a diaphragm which is vibrating. This vibration is accompanied by a soft humming sound. Despite rubber feet for cushioning, an annoying resonance can occur. The Air-Pad Silencer prevents this resonance and is also sound insulating. Available in two sizes; the Air Pad 1 is suitable for Air-Flow Mini and 1, the Air Pad 2 is tailored for the Air-Flow 2. Air Pad Silencer’s Available: Silencer Pad 1 Silencer Pad 2 Superfish surely makes your aquarium hobby successful, complete with aquariums, filters and filter media, heating, lighting, ventilation and useful accessories. It is our goal to make your aquarium hobby successful and also affordable. Click here to also browse a wider range of SuperFish products we stock!