Looks great! I am definitely impressed with the hardscape.
Nice rams too.
can you see the silicone from the side glass? did you paint them black on the outside?
I've done a pretty good job on this tank of hiding the silicone(using black helps a lot) on my other 80 gallon tank the joints were the bane of the tank to me(though no one who saw the tank in person ever once took notice of them). Prior to getting the plants and other pieces into the tank with these types of projects sometimes the silicone joints will make you want to quit because that's all there is to draw your eye but once the tank is going you won't even notice them especially with a little care taken.
The background is painted black on the outside.
On the sides I left it open so I can see back there, the joints are not 100% water tight on purpose I wanted to try to get a shrimp colony going and they spend a lot of time behind the backgrounds when not out eating. So I like to be able to look back there..