My bad taste was from a single Radion g2 over my deep blue 30 frag tank, seeing several dim looking SPS reefs in my area follow mfg recommendations, and a good buddy (very experienced) with poor results using Mitras over his 300g. The best results that I have seen with LED is when user incorporate T5 into the lighting scheme, or grossly "over-light" with LED, which I believe to be the actual amount needed to avoid shadowing i.e. my buddy had 8 AI figures over a 200g with great SPS success, and Pieces of the Ocean (vendor) had a 75g long with 5 kessil and awesome SPS color/growth. I simply cannot afford the amount of LED fixtures that I believe would be needed over my 32x32x26 cube, especially since I would just be trying to replicate what I already have with my giesman spectra at a much higher cost with little increase in efficiency.