Blastomusa or Acanthstria

[AndyL]

Merletti have smaller polyps and have a branching type growth, each polyp grows its own little tube, and grows as a colony (think parachute/umbrella type growth, it spreads up and outwards).

Wellsi is a little closer to an acanstrea in overall shape/growth (they're quite different seen side by side).

If you were local I'd say swing on by and have a look, I've got a little corner of my reef with both blastos and two different species of acans.

Andy