38/48 really isn't that high, but you may be able to go a bit lower. Your pump may be adding 1 to 2 degrees to the overall temp... not the gph though. The fact that it is submersible instead of inline. Everything else seems about right though. You may want to add a higher CFM fan. Adding two of the same fan doesn't do a whole lot from what i've played with, but a single higher powered fan might be useful.
Either that or i'm just talkin' outa my asss.....
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I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.
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