Well this is what I have been talking about. I wanted to build racks to set the LR on in the new tank. I have been researching this for a while and have found this to have a lot of benefits. it gives more freedom for aquascaping you get more vertical with less rock. It gives good hiding for the fish as well. And the PVC will act as a nursery for pods and anotherthing to be quite important also is cryptic sponges which I have found out are very very good filters in tanks.
I used 3/4" PVC for the racks. And expansion foam to go over the PVC when put together, the foam will expand and give texture to the rack. And the epoxy is to go over the foam once its cured, this will keep the foam from breaking down and also when the resin is drying (which only takes 5 minutes) you put sand on it so the sand adheres in the resin and gives a more natural look.
Over time when the tank matures the pvc will take on coraline algae and other natual growth and before too long you will not be able to tell the pvc from the LR.