Live rock on eggcrate, sand or on bottom?

[Reef Pilot]

Originally Posted by Aquattro

I used eggcrate. Dumbest move I made in setting up my tank. Now it's in there for good, so no option to go bare bottom. The sand is blown all over the place, so it's exposed across the entire front of the tank and looks like ****e. I would not do that again....

What if you had just put it under where the rock is? Would that have been OK?

You guys have got me wondering again now.... Someone mentioned a rock falling and possibly breaking the glass if there is no eggcrate. Is that possible? I would think with the water resistance, the rock wouldn't exactly free fall as if it was in just air. In my current tank, most of the rock is fused together with coralline algae, but what is loose sometimes does get knocked down by an urchin. But with my sand bottom, no harm gets done.