Live Rock Live rock is the foundation of the reef, both structurally and ecologically. This material is old coral skeletons with a diverse community of microbes, coralline algae, and invertebrates growing in and on them. Showing the single result Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Live Reef RubbleRated 4.00 out of 5 $49.00 Read more