Martin,
HAH, HAH...You stole that idea from me and I stole that idea from Meelev (of reefcast fame).
Yes, I use the 2-part oately's pvc glue. The purple one is the primer which actually melts the pvc a bit. The clear one is of course the glue.
They are "reef safe," just make sure to let it dry for 24 hours before running water through it.
Let's see some pic's when you finish the plumbing !