Hello everyone I'm very new here and to your wonderful hobby. i turned my lights off tonight and when i went to look at the tank before bed. i saw a centipede looking creature popping out of my live rock near my red legged hermits. Im am saying centipede but its really more like a worm with tons of little legs. When i flashed the light on it he quickly hid back into the rock. Is this little guy going to be an issue. All that is currently in the tank is my clean up crew.