What are you water parameters? And those corals tend to go thru stages where they shrink up and look terrible in order to shred their outer layer. Make sure it has some flow around it, but not too much.
Soft corals let off chemical warfare with each other, so with your corals being so close together, they may be fighting with each other. Try separating them and running some carbon to absorb some of the chemicals floating around in your tank.
Out of curiosity, what kind of lighting do you have, and where did you place the corals in the tank?