I've read that tera cotta pots make good caves for fish, so I got a few from my mother-in-law. The problem is she had a bunch of them help together with packing tape.
My question is, what can I use to get the glue residue off of the pots that won't hurt my fish?
My question is, what can I use to get the glue residue off of the pots that won't hurt my fish?