I had 2 skimmers that came with
Rio pumps and neither was very good. When I upgraded to a MJ with the venturi both skimmers worked a ton better. Plus, you can turn them on and off and they start up again, no cleaning. I have an MJ 1200 in my tank right now (along with one of the skimmers with a venturi mj mod), and I haven't cleaned either of them for over a year and they are running fine (just covered in coralline). You will be amazed at how much better your skimmer will work with the mj vs. a Rio. Don