It does look normal. I don't think it has any issues with it. Was the clam under halide prior to your tank? It might need some time to adjust if that is the case. My lfs has vertex on there frag tank, unfortunately I can,t say those frags are doing good at all. All the sps has dull coloration compare to when the first came in, but on the other hand, in my biocube 29 with DIY Cree 3w LEDs I have several clams whom are doing excellent. I like your husbandry for your clams. I don't think you need to change any of that. I would leave it for a while and see what it does.
