The Mag 12 will do fine. You might look at Dolphin pumps as well. Are you going to have this skimmer in the sump or run it externally? If you are going to have it external, you might want to look at an external pump. They last longer, are quieter, and contribute less heat to the system than the submersibles. I would recommend a Blueline 30HD or equivalent for the EV-240. Make sure, if you do check into an external pump, that you look only at the pressure rated models. The pumps rated for circulation only will not do as good a job with a skimmer.
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