Placement of bubble coral

[molybdenumman]

I'm getting a bubble coral this afternoon and wanted some opinions as to where to place it in my tank. It's a small specimen. I have a 50g tank (48"X12"X18"deep) with live rock and two maxijet 900 powerheads pointed at each other across the back of the tank. I use aragonite as my substrate. Lighting = PC 2X65W 10000K + 2X65W actinics.

Should I place it in the sand, near rockwork, under rockwork?

I have not had much success with these corals before and I really want this one to thrive.

Thanks

MoMan