The mushrooms will do good mid level and lower, I think most polyps will like it toward the top. Never had any lps but some sps might grow slowly if they are very near the top. I have a
bali green slimer about 8" from my 4 VHOs ( 2 x 110W daylight and 2x Actinic 110w) near the middle and it grows and looks good I have a 90 so its two feet deep and
green star polyps grow near the bottom. I have a twenty long with one of the dual coralife PC strip lights over it and it grows sps just fine. So over all it depends onthe depth of the water.