It just needs cleaning. The crazy thing is I did go by exotic and looked at the aqueon (May have spelled that wrong) stands and it looks to me that the the builders are crazy!! The tank sits on an outer rim that is supported on the inside with wood glue and staples!!! How in the world do these tanks not just fall down with all that weight being held up with glue and staples?!!! Nelson, the owner, said they have never had any problems and they even come with a limited lifetime warranty. I'm not a engineer but is it me or is this crazy!!!