I've been slowly but surely working on these. Below are my latest oyster cultches using the Gorilla Glue. I'm doing away with the egg crate boxes. But for now, they make great platforms and supports for building the oyster cultches. Instead, I'll have PVC frames to support the cultches imbedded directly in DIY live rock. I'm hoping to get to the DIY live rock this weekend.
I know that there is some spillage, but I'll wind up gluing on more oysters there anyway. Eventually, I'll have a full reef of these.