Another site says this:
Green Elegance Coral
Green Elegance Coral, also know as Elegant Coral or Ridge Coral, is a coral of medium hardiness. Elegance Coral, Catalaphyllia jardinei, likes low to moderate water flow and a low placement in the aquarium. To truly understand from whence its name is derived, actinic lighting should be employed. The actinic fluorescence causes the tips of the tentacles to glow in various shades of blue, green, orange, and purple. Elegance Coral will, on a daily basis, encroach upon and harm other corals as it expands under light and retracts at night. It will definitely benefit from occasional target feedings of plankton or brine shrimp. Elegance Corals are some of the hardiest Large-Polyp Stony Corals, so they are good corals for beginners.
Which is why I bought it!
I guess I'll have to wait and see what happens. My tank has been up and running since Oct. so I think its established enough but probably not dirty enough! I also have 3 250 hqi de mh and 2 140w actinic vho's. Its in the sand bed, low-medium water flow.