I know PVC is safe to use, and have used it extensively, I have a question about glueing PVC for my tanks. Is there any problem with PVC cement in the aquarium? In the past I have always just pressed it together, but am thinking of a couple of projects that would require cemented joints and thought I'd ask before I did this. obviously I would clean and rinse it well afterwards, but didn't know if the cement left any nasty residue that would be a problem in a closed system.
Dave
Dave