If I'm not mistaken it's a goniopora, although, for a moment or two I thought it may be an alveopora but now I don't think so... I believe they like moderate to high light, medium current and yes phytoplankton is probably the food of choice. A hard coral to keep, usually they slowly receed and finally die after a few months in the aquarium.
Maybe someone else can give you better information.
Doug
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