thanks wasp, they are 2 differnt corals, and look different in person. the 3rd one down has purple tips, white polyps, and the base has a purple rim as it encrusts. The 4th picture down is my fav. Its very blue, large extended polyps amongst the branches, and has grown rapidly around a piece of live rock to completely enclose it. Both are in strong light, directly under one of the 250w halides, about 10 - 15cm from the top of the water.
They are in pretty high flow as well, which is important because they are quite dense. Both have 2 arco crabs in them. I feed Pohls CV only.