<a href=showthread.php?s=&postid=14846991#post14846991 target=_blank>Originally posted</a> by CaptainCoral
You do not ever want the water line above the top of the black box.
Back a few pages, my first post (on page 34) I explain how to overdrive the plumbing (no valve on mag9) on an ev180 and still be able to drop the water line to just below the top of the black box.
The only reason to overdrive the skimmer is to be able to choke back the air more. The harder the pressure on the injector, the more air she can pull. If you're overdriving the skimmer, you need that air valve in place and cleaned regularly.
+1; That advise got me runninr right.
Also anyone having problems with salt in the air valve, check page 30 find chris mod.