I'm missing something from this scape. I think it's a tall plant for the back, in the back left corner. Some of the Bolbitis needs to be removed as it over powers everything else. Originally the Bolbitis was supposed to be the background plant, but it seems to like to grow quite horizontal as appose to vertical.
My thoughts are something like Vallis Nana, or more preferably Cyperus Helferi. I'm a little concerned that it's a bit too dark in the very back due to the way my light is mounted. I'm going to have a bit of a play to see if I can change it more.
Pics tonight, promise!