Im looking at getting some dry man made live rock from Coral plantations I have three reasons for wanting to get it. 1. To aid in the removal of nitrates (anoxic denitrification process) 2. To make some hiding spots 3. Provide a base for coraline growth and a base for reef in the future. But i also have some questions How do i "seed" man made rock? Can i just put it in my tank and wait for the bacteria to grow or should i put it in a well established live rock tank for a greater variety of organisms? How big does a live rock need to be to achieve anoxic denitrification? How do i stick live rock together? I want to build a cave in the center if my tank that fish are able to swim around.