Tiger watchman goby structure

hobbby3

Reef Junkie
I've got a tiger watchman goby that occupies my center live rock structure by digging pathways in the sand underneath. This is fine and the rock was hand selected with arches just so he could do so.

However I dont think he's happy with just two or three tunnels. I'd like to add an artificial structure under the live rock in a 2x2 foot area just so he can construct some more advanced tunnel systems through the sand. Then I'll place the live rock ontop of the structure and use sand to hide it.

Anyone have an idea what I can use to construct a structure like this? Just looking for some ideas.

 

hobbby3

Reef Junkie
This idea too crazy to get any responses? PVC and eggcrate with nylon mesh ontop is the only thing I can dream up...
 
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