as for shadowing in the corners , by looking at your sig you dont have enough light demanding coral to be worried about shadowing just move the coral into the light , just because the light isnt as strong near the ends of your tank doesnt mean its barren waste land , alot of stuff grows in lower lights even sps.
hehe i find the dark sides of my tank the most interesting , i use nps corals to fill up those places and they have more color then anything in my tank.
it is what you make it man
