Yep, Its a great specimen "Open Brain" coral, (Trachyphillia geoffroyi)
Your Reef is looking great Oscar a credit to you..
Bit like Discus this marine stuff, just got to buy one more.....just one more....I am sure I can fit one more....maybe if I rearrange.....yes! I can fit one more
Must post some pics of mine soon (lazy)
Regards Col.