I have the same skimmer and LOVE it. The water in my skimmer chamber comes about one inch from the top of the output. I have it sitting on the bottom of the sump, not on a shelf or anything. Hope this helps.The skimmer is a sro3000.
by width do you mean depth or thickness?I know the baffles height I want(9''), but I want the baffles width. The only width I have found so far is 17'' and 3/8''.
and as i said above.Sorry, I was asking if 17'' 3/8'' is the right baffle width for the 40b. I'm going with glass baffles, I just wanted the right glass baffle dimensions.