http://www.drsfostersmith.com/product/prod_Display.cfm?siteid=6&pCatId=8164 I have had both the 1300 and 2600. the 1300 died on me but that was probably my fault. they tend to vibrate but if you apoxy a certain joint in the middle of the pump it quiets down allot. I've been running on the 2600 for the last few months. it is big as a mofo but so is the GPH. Their good and their cheap. You could always also buy these as a temp pump if you need to save $ right now it's what I did