Aqua One SR Air pumps are of the highest quality with a robust design built to last. They offer near silent operation and all models come with an air control dial to allow you to choose what air flow you would like. The Aqua One SR Air pumps are a simple diaphragm design which allows for easy replacement and depending on which model has between 1 and 4 outlets.
SR 2500 Aquarium of 10 - 100 litres 1 x 160 L/Hr Single Outlets
SR 7500 Aquarium of 80 - 100 litres 2 x 180 L/Hr Twin Outlets
SR 9500 Aquarium of 100 - 200 litres 2 x 200 L/Hr Twin Outlets
SR 1200 Aquarium of 350 - 700 litres 4 x 200 L/Hr Four Outlets | 
