Selling used Iwaki Magnet Pump (1200 GPH), but work great. Nothing wrong with it.
Model: MD-40RXT-115NL
See this: http://www.marinedepot.com/Iwaki_MD_Water_Pump_(Japanese_Motor)_Up_to_1000_Gallons_Per_Hour_External_Aquarium_Pumps-Iwaki-IK1123-FIWPEPZT-vi.html
For more detail.
Asking: $150.