What do you guys use under your LR?

[Doug]

I,m with Steve. Mine just sits in the sand. I placed base rock on a couple inches of sand, where the reef was going to be higher. Then placed more sand in and around. This creates a base for the remainder of the rock.

I also have lots just on the sands surface and wedged into the sand a little. But they are free standing alone and not part of a structure.