Is this a coral?

[Diomedes]

I got a colony of what looked like the same stuff on a batch of Indonesian LR (looked identical)...I can only say that mine was definately an encrusting stony coral...resembled porites and montipora a bit, pavona a little less. In the end I couldn't identify it...it grew to the surface area of a CD case in a mid-light fluorescent tank in 8 months.

Stephen