Collar

Collar air pumps (Apump) are the smallest air pumps available on the market. With its low noise production and high air output, this is the ideal air pump for small spaces and cabinets. You can think of small (nano) aquariums, the living room, etc. 

The Apump is available in 2 variants. The Apump for aquariums up to 100 liters and the Apump maxi for aquariums up to 200 liters.