The AAPA70L is perfect to run several Waterfarms or multiple air stones at once. It is an electrical magnetic air compressor in a high-quality aluminum alloy case, that is made with wear and tear resistant material for its cylinder and piston, and boasts high pressure and high output. The AAPA70L comes with multi-outlet divider (6, 8, and 12) that can be individually opened or shut. The AAPA70L Commercial Pond Air Pump comes in at 70 LPM, has a rated GPH of 1100, and has a total of 8 outlets. The Active Aqua Hydrofarm AAPA70L 70 LPM Commercial Air Pump is an ideal choice for pond and growing projects that need a powerful energy source to keep running and thriving efficiently for long periods of time.