I ran into a problem today. I wanted to start skimming during cycling process, I have the skimmer and finally got a Mag 9 pump. Originally I bought blue line 40x pump and then realize I would have to drill a hole in a glass sump (can't get the sump out now) so I bought the submersible Mag, but it has smaller fitting. I can't find reduction in plastic anywhere. Where can I get it? Do I have to order it?