Question: What kind of live rock is the best to buy?
There are many grades of live rock to choose from, but for the most part aquarists look for rock that allows for maximum marine life and coralline algae growth.
Keep in mind that live rock is normally sold by weight, so the more porous the rock is, the more rock volume you will get for your dollar, as well as more surface area for fauna and bacteria to grow on.
To learn about live rock, how to choose it, how much to use, and much more, refer to our Live Rock Resources. Another good place to see different types of live rock and how people have used them in their aquariums is in the Reef Tank Photos.