I bought 60 ilbs from them and wish I would have bought all of my rock there. Get the "boat run" rock. YOU DO NOT WANT TO DIP THIS ROCK IN ANYTHING BUT YOUR TANK!!!! The stuff is beautiful, loaded with hard coral, polyps, tube worms seafans, starfish, red reef crabs, pods, you name it. I even found a decorator crab in it. Guess what? No mantis shrimp! I can't say enough good things about this place. Make sure you get overnight shipping. The send the rock COMPLETLEY submerged in water. Also make sure you check the shipping bags they come in over and over until you make sure you get all the little guys that come along for the ride.