From Australia, this is one of my nicest Platygyra I've ever received.  Been growing it for the past 10 years.  Placement of this coral is important because of the long stingers at night which will sting nearby corals.
 
Requirements
Lighting: Low  about 100-150 par
Flow:  Low
Cal 400-440, Alkalinity between 7.5-8 Dkh, Mg 1400