I finaly got a red lense for my flash light and was checking out my tank after the lights went out. I saw lots of interesting things that I never new happened. My eel was laying on top of the lr and just waiting for some food. I noticed that I have more than one sally light foot and then there were the worm looking things. They ranged from little bitty to around an inch or longer. It was quite interesting to look through the tank . I am glad that people here talked about it and gave me the idea.