joining rocks with rods... what type is good?

[Nate]

how much of an arch ar eyou going for?

My tank is 48 X 30 X 24...and sits lengthwise into a room. The overflow is on the back in the middle of a small panel, and the rockwork is done as an island that connects to the back of the overflow and tank wall. What I did was use one rock with a large opening underneath, and put it in the front corner before I started my rockwork. Started building up the rock to the front corner, as my glass for my sandbed is only 33 inches from the back, and cut it off and headed one direction with it. I built straight up on he rock in the sandbed, and then used a large rock adn corals to connect to the main body of the rock work. Looks decent in my opinion, maybe I will try to get handy tomorrwo nite, adn take a picture for you...