well it is a matter of PAR readings when it boils down to it. If that light can produce the PAR that your SPS needs then yah, it will be ok. Other than that you then start thinking about the color spectrum to try and 'contrl' the colors of your corals.
I think that light should be good for most SPS at that depth. Other than that keep that fuge rolling and the water clean and SPS should be fairly happy in that tank.
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