what should I put in this space?

Ok peoples. What should I put in this big blank floorspace in my 55? I had a cryp in there, but it was getting too much light. So my question now is what can I put in there?
Here's a pic...
Stats are:
Ph: 7.0
amm.: 0
Nitrates: 0
Nitrites: I think like 30 ppm or something... it's hard to tell with my kit.
lighting is 2.3 wpg
I'm going to add co2 hopefully within this week or two
Fertilized like every 2-3 weeks with flourish
It's just gravel and flourite.

Yo, somebody!

this is a hard question to ask, your plant seems to do just fine.. get the rest of the tank in order to display your plant better..

something as simple as a black background will give you the feeling that the tank continues into the depts.. also some bogwood and large rocks could be added.

Yeah, see I can't add a backround. I'd like to but it's in the middle of the room, it would look odd from the other side.
I'll get some bogwood though, I've been wanting to.