I recently got two hammer coral frags. One green hammer and one bicolor hammer. At first both opened up and looked great. I left them on their frag plugs on the sand bed and everything seemed fine so I glued them to a rock. Soon after doing this the bicolor retracted. So I knew he didn't like where he was at. I glued both the green and the bicolor to the same rock about 5inches apart. The green hammer is fully extented and is growing. I move the bicolor into a spot with less light and watched to see if he liked it better. No change. I move him to a place with more flow, no change. I can't see any pest and haven't witnessed any of my fish rippling at him. Any suggestions about what I should try.

