After a cleaning of gravel in my 55, I noticed that if I looked really closely at the substrate, rocks, and driftwood, that I have these TINY little polyps all over the place. They are white and look like marine polyps. It is really weird. They do not seem to hurt the fish, but in all the reading that I have done, I cannot find anything out about these things. I would like them GONE. They worry me a bit. Since they are attached to inadament objects, I can only assume that they are organic and not parasitcs. If anyone has had these, or know what they are and what to do with them, let me know please. I have been in the hobby for MANY years, and have not ran across these before. Thanks for reading. Sara