need help with bulkhead

[DiverDan]

Thanks for your input....I guess I was not clear in my question! I have a 55 Gal tank that I was replacing the bulk heads on because I just moved to Calgary and I did not have the tank here. I knew the return to the sump was 1-1/2 ".... But I forgot the size of the other bulk head coming from the pump. It was a 1" bulkhead witch I picked up yesterday........On another note when I get all my equipment here I will post some of this for sale (I've collected allot and want to down size) and would like to attend some of your meetings to trade frags and such.

Cheers

Dan