smellslikefish
Member
I have many small tubes in my tank. Theres a larger one in my sump and when I shine a flashlight on it a ceature retreats down his tube. All the tubes have some sort of web coming from the opening (that looks exactly like a spiders web) and can pull the web back into the tube. I'm guessing it's some sort of filter feader, but I want to make sure they are harmless.
Thanks,
Thanks,