So I peeked into my tank tonight with the flashlight to check on some new LPS corals I've added to my aquarium when I notice quite a few of these very large sea bugs. They range in size from 2-4mm approximately, quickly change direction by curling in on itself like a potato bug, are quick and tan in color. I tried my best at snapping some pics but can take video if required. Are these good to have or not? I've never seen pods as big as these guys