Although a successful aquarists for a long time, sps have never been good to me, so my relating to their progress may be somewhat tainted.
I wonder if all the encrusting and lack of vertical growth, has something to do with less intense lights or is this just the natural progression.
I,m happy with the T-5,s over my 4ft. tank and as mentioned may add another set. Also as I mentioned before, if I went back larger, like a 6ft. I would go back to halides, likely a pair of 400,s or a single 400 over a 180 cube or something. I still own my 45g cube and if I went back to it for some reason, I would also run a single halide there, likely a 175w Iwasaki 14K or Ushio 10K.
Likely all my sps would then crap out or something though.