It's not porites, that is actually a variety of Siderastrea sp. which is considered an LPS. They can extend fairly long sweepers at night so give it some room.
Its not an acan/micro 100%, I was leaning towards porites but Greg is usually right when it comes to coral ID'ing so I would go with it being a Siderastrea.
Levi
*EDIT*
This is what a Siderastrea Sp. looks like (Thanks to google)
05-26-2008, 03:10 PM
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