ID please

[Dr.King]

I have had this coral for over 2 years. It came in as a 1" brown frag and stayed that way for 18 months. Then I noticed it started encrusting with a green leading edge. After it encrusted well it started putting up new growth vertically with a reddish coloration on the body and light blue tips with purplish polyps. Any ideas what it is?

Macro shots.

 

[Kolognekoral]

Strange it should take so long to establish, but it looks to be A. tenuis. Very nive colouring coming along.