I have a quick question....I have a centipede that i've had for a couple years now....it has been pretty mellow until lately but now i find it circling the tank and freaking out..flailing all over the place...Is this normal?? There isn't anything in the tank that could harm it and it has water and the substrate is just right. I haven't been feeding really often...maybe once every other week like i always have. Any feedback would be appreciated..i don't want it to be unhappy but i'm not sure what it is trying to tell me! Thanks!