[I have the pump already, so I'm going to go for it. I'm going to make mine "comparable" to the EV-240. I have all of the acrylic I need to do it and a friend with the tools to do it. The one thing I'd like to have, but can't find, is the sockets that they use to screw the injector and the gate valve into. Does anybody know where to get those or what they're called? I've searched for fipt, mipt, socket, and haven't come up with those exact things.
I agree that it would be nice to keep the electricity usage down. But, when you're running 940W of light, three aquariums, two fridges, one freezer, and one souped up PC, the difference I'd see in being efficient is minimal.
I see a new trend coming! Camera phones, quiet pc's, and now energy efficient aquariums.]