Mantis shrimp in 33g sump?

[spit.fire]

so for awhile i had him in my sump but i got tired of him eating all the hermit crabs that would work there way in there so i moved him to a fluval edge for now, i put down a sheet of 1/4" plexi on the bottom because he was making to much noise, theres black gravel in there with him and lots of liverock rubble that he keeps rearranging. every now and then i throw a hermit in there for him but generally i feed him mysis. Im hoping i can find myself a peacock which will be going in its own 33 gallon tank that will be attached to the sump on my 360 gallon