rio modifications

[pwc72971]

Saw these DIY instructions for modifying a Rio pump. Before I gave it a whirl, I was wondering if anyone else has done this. Do these directions look correct? They look good to me, but who am I? The link follows...

Thanks

http://saltaquarium.about.com/cs/aquariumsetup/a/aa091099.htm

p.s.: hope the link works...