Right now I'm using a quiet one 3000 as my return pump from my sump and every time the electricity flickers at my house this pump never restarts itself I have to fool with it for a while to make it restart. I would like some other suggestions for another submersible pump. I was thinking about the mag drive 7 I need about 600 gph at 3' head height. If anyone has a mag drive 7 or a mag drive about the same size do you have this problem? I have a mag drive 3 on my skimmer and it restarts everytime thats why I'm thinking about getting a mag drive pump. Thanks