I bought some clear 1/2" ID pvc. I cut it into 1" lengths, and epoxied these onto the rock structure. My chalices are on frag plugs, and these fit into the pvc pipe. chalices grow out pst the edge. Makes fragging a breeze. And you can move the chalices around for low or light requirements
I have a Miami Hurricane colony 5 inches across that is a plate, and is still movable because it sits on a 1" diameter frag plug on these small pieces of clear PVC.
Great idea!!! Thanks for sharing.


I have made some changes since these pics but you get the idea

