I added a couple more rocks to the tank to make a nice looking cave on the left side. I still have about 5-6pnds of rock left to transfer when I shut down my nano. I think it's enough rock but it could use some more to cover the overflow.
Here is the most recent picture I took of the tank.

The light is temporary for now. Looks dull with only the center lit up.
Here is the cave from the left side.
