I really like this Mantis Condo/Hotel idea!! In these Mantis Hotels, do the mantis's come to the glass and communicate/interact with each of their neighors??? I think If I had to design one, I would use a circular tank of 2-3 foot radius, with each tank ending in the center (something like the mercedes emblem). You could vary the radians between the compartments if you had different size/species. Then install a central sump, and all of their caves/burrows in the central corners made out of PVC covered in LR, and then have about 8-12 inches of open sand/aragonite for them to explore and meet their neighbors!(this way if you have three they could all interact, assuming that seeing other mantis shrimp near their burrow doesn't stress them out!) Maybe Ill draw up some blueprints... Does anyone have any experience manipulating/bending acrylic to a round surface as described????