Love the ease of use and the controller is the icing on the cake. I have 2 1950gph pumps (one on each end of the tank that are setup on the controller) and a 750 in a lower corner. Circulation is good, but I was hoping for a bit more movement than I currently have. It's only been set up for a little over a month, and I'm continually making small changes, so maybe I just don't have things dialed in just yet. If not, I might just pick up another 750 and a couple harnesses to sync them with the 2 stronger ones.