. Of course, on MFK, your tank is never big enough, hahaha.??? PVC ??? were you talking to us and about our over flow boxes? If you are, they're totally smooth. OH, nevermind. Yeah, I see who you were talk to, and you're totally right.spexmoneymaker;1987873;1987873 said:You should sand down the plastic around that pvc pipe. at least get rid of the big chunks. fire eels have soft skin that scratches easily. the pipe will also look nicer imo.