update

looks like a lot of live rock and dead spots where detritus will accumulate, not much space left for corals, I think you should try to make such a aquascape so your live rock is hardly touching sand, find some small pieces of rock and put it underneath.

your rock looks good. i love tonga tanks. dude above, he has more than enough room for corals. i wouldnt change your aquascaping.

new background looks great! blue was a good choice.. what kind of corals are u planning to get? any more fish? i would recomend something that is gonna dart in and out of that rock like a dottyback or something.

sixline wrasse are great for darting.