Coralife Luft Pump Adjustable Aquarium Air PumpCoralife Luft Pump Adjustable Aquarium Air Pump The new Coralife Luft Pump is an air pump that has been specially designed to work with deep tanks. Adjustable and optimized to enhance performance, the Coralife Luft Pump is perfect for a wide variety of equipment such as protein skimmers, under gravel filters, ozone oxygen reactors and air pump driven ornaments. At maximum, the flow rate ranges from 1. 86 liters minute to 4 liters minute depending on