I have a 150gal. tank with about 10gal. of sand. No kidding 5"to 6" sandbed. It's been up and running great for about 2 months now. I have alot of my large main rocks supported on crates. I have, snails, hermit crabs, sandsifting starfish, peppermint shimp, emerald crabs, a few corals, 2...