I think anything you can do to draw attention away from the very center of the tank would help. Right now, that is where the focal point is, and the eye doesn't move. Highest point on the right is good, but you need to angle down to the left. Either some taller than the center plants to the right, or shorter stuff in the center will help?
Otherwise, looks really nice!
Last edited by HuntCast; 09-03-2013 at 12:02 AM.