SPS ID? Purple - Beige Coral

[RA]

What type of coral is this? The new growth is a nice purple color but it then fades to a beige. Also is there anyway to have the older growth have more of a purple color? My alk is 8 and my cal is close to 400. I have zero nitrates and I run GFO.

Thanks

 

[RA]

Anybody? Also I keep it under 250w mh lights.

 

[Frick]

Looks like Nana http://sdmas.com/corals/50.php

I find a stable alk keeps these guys nice n purple, the rest of your parameters seem great. More water flow will cause the colony to grow tighter together also.