Mantis Shrimp

Hi. I recently stumbled upon a mantis shrimp for sale for 20$ at LA. I have done some research and they are awesome little buggers. I would love to add one to my tank. But, here is the tricky part. I have a 40g community reef tank, and I like my fish and coral so he can't just go in my display tank. I was hoping I could isolate a 7"/12" section of my tank just for him. I was hoping I would be able to make a plexiglass divider, To keep my fish and coral ALIVE! and safe from the little devil. Would this work? Also, I read Mantis shrimp could break glass, would I have to worry about that? Finally, What type of Mantis Shrimp would be best?