Reef Scaping

[George]

I stacked rocks using acrylic rods in both of my tanks. Before drilling, it's better to build a box exactly the dimensions of your tank using some cardboard. The box only has three wall, leave out one long wall, so you can look at your aquascape at eye level.
Use 3/16 rods if you have a smaller tank and smaller rocks. Use 1/2 rods if you have large rocks.
It's very easy if you have a powerful drill. I did my 180g aquascape in an afternoon.