Hey all, I have recently seen a number of very thin, small worm like things coming up out of my substrate. They are less than 1mm wide, and about 1cm tall. I have tried to take a photo but they are close to white/see through and they do not come up in pictures. They seem to be abundant on the substrate and rock on the left side of the tank and not the right side. Does any one have any idea what they are? I am moving the tank soon and replacing all of the sand so they will probably go, but I am just making sure I do not have to treat any rocks that they are on.