That is something I've been seeing, looks like they use in the range of 1200-1500 watts which is a bit excessive. That said to flow 5000+ gph like I am going to need I am probably going to pushing that in pumps regardless. Especially if I put a smaller tank upstairs like I want to do.
I just looked up Hammerhead power useage, looks like about 355W, so a huge amount less. That said I would need two of them to put out the flow I am going to need. $900 in pumps will be a lot more than I can sell these for. I'm going to have to do a bit of research, especially once I know for sure what model these pumps are.