A friend from out of town dropped by a month or so ago and gave me some of his reef equipment that hadn't been used in about 20 years. Part of this was an old wet/dry filter. It's acrylic, and while dirty appears to be in pretty good shape. I already have a sump and don't really need it as a filter. Anyone have ideas of what I could repurpose it as? I'd rather not get rid of it if I can find a use for it.