So this is a real newbie question...but I got up at 4:00am and was looking at the reef and noticed a lot of movement on the rock. It appears to be small, light brown ( I think shrimp or pods of some sort) and they stay on the rock moving. Any ideas, and I am hoping these are a good thing. I would take a picture but they don't really show up well enough. And I have never noticed them during the day when the lights are on.
